Document ID: EPA-HQ-OAR-2005-0169-0174
Agency: epa
Document Type: Rule
Title: Fuel Economy Regulations for Automobiles: Technical Amendments and Corrections; Direct Final Rule
Posted Date: 2009-11-25T05:00Z

[Federal Register: November 25, 2009 (Volume 74, Number 226)]
[Rules and Regulations]               
[Page 61537-61555]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr25no09-15]                         

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 86 and 600

[EPA-HQ-OAR-2005-0169; FRL-8982-1]
RIN 2060-A036

 
Fuel Economy Regulations for Automobiles: Technical Amendments 
and Corrections

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule.

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SUMMARY: EPA is taking direct final action amending and correcting 
portions of the Environmental Protection Agency's existing fuel economy 
and emission regulations. This action makes some minor corrections and 
amendments to EPA's December 27th 2006 final rule for fuel economy 
labeling requirements for cars and light trucks, including a slight 
revision to the minivan definition. This action also makes changes to 
EPA regulations to administer the Department of Transportation's 
(DOT's) 2008-2011 model year passenger automobile and light truck 
corporate average fuel economy (CAFE) standards. Changes include adding 
reporting requirements for manufacturers to report to EPA their 
applicable reformed CAFE fuel economy standards (also called ``required 
fuel economy levels'') and reporting the basis for determining such 
``required fuel economy levels.''
    This direct final rule also adds provisions to clarify that special 
test procedures, calculation methods and label formats may be used for 
advanced technology vehicles for fuel economy labeling and CAFE 
purposes. Advanced technology vehicles include, but are not limited to 
electric vehicles, fuel cell vehicles, plug-in hybrid vehicles and 
vehicles equipped with hydrogen-fueled internal combustion engines. In 
addition, today's action makes some minor changes to clarify the 
meaning of, and correct errata in EPA regulations. The above amendments 
and corrections will allow for the more effective administration of 
existing regulations.

DATES: This rule is effective on January 25, 2010 without further 
notice, unless EPA receives adverse comment by December 28, 2009. If 
EPA receives

[[Page 61538]]

adverse comment, we will publish a timely withdrawal in the Federal 
Register informing the public that the rule will not take effect. The 
incorporation by reference of certain publications listed in this rule 
is approved by the Director of the Federal Register as of January 25, 
2010.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2005-0169, by one of the following methods:
     http://www.regulations.gov: Follow the on-line 
instructions for submitting comments.
     Fax: (202) 566-1741.
     Mail: Environmental Protection Agency, EPA Docket Center 
(EPA/DC), Air and Radiation Docket, Mail Code 6102T, 1200 Pennsylvania 
Avenue, NW., Washington, DC 20460, Attention Docket ID No. EPA-HQ-OAR-
2005-0169. In addition, please mail a copy of your comments on the 
information collection provisions to the Office of Information and 
Regulatory Affairs, Office of Management and Budget (OMB), Attn: Desk 
Officer for EPA, 725 17th St., NW., Washington, DC 20503.''
     Hand Delivery: Docket Center, (EPA/DC) EPA West, Room 
B102, 1301 Constitution Ave., NW., Washington, DC., Attention Docket ID 
No. OAR-2005-0169. Such deliveries are only accepted during the 
Docket's normal hours of operation, and special arrangements should be 
made for deliveries of boxed information.
    Instructions: Direct your comments to Docket ID No. EPA-HQ-OAR-
2005-0169. EPA's policy is that all comments received will be included 
in the public docket without change and may be made available online at 
http://www.regulations.gov, including any personal information 
provided, unless the comment includes information claimed to be 
Confidential Business Information (CBI) or other information whose 
disclosure is restricted by statute. Do not submit information that you 
consider to be CBI or otherwise protected through http://
www.regulations.gov or e-mail. The http://www.regulations.gov Web site 
is an ``anonymous access'' system, which means EPA will not know your 
identity or contact information unless you provide it in the body of 
your comment. If you send an e-mail comment directly to EPA without 
going through http://www.regulations.gov your e-mail address will be 
automatically captured and included as part of the comment that is 
placed in the public docket and made available on the Internet. If you 
submit an electronic comment, EPA recommends that you include your name 
and other contact information in the body of your comment and with any 
disk or CD-ROM you submit. If EPA cannot read your comment due to 
technical difficulties and cannot contact you for clarification, EPA 
may not be able to consider your comment. Electronic files should avoid 
the use of special characters, any form of encryption, and be free of 
any defects or viruses. For additional information about EPA's public 
docket visit the EPA Docket Center homepage at http://www.epa.gov/
epahome/dockets.htm. For additional instructions on submitting 
comments, go to Section VII of the SUPPLEMENTARY INFORMATION section of 
this document.
    Docket: All documents in the docket are listed in the http://
www.regulations.gov index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material, will be publicly available only in hard copy. 
Publicly available docket materials are available either electronically 
in http://www.regulations.gov or in hard copy at the EPA Docket Center, 
EPA/DC, EPA West, Room B102, 1301 Constitution Ave., NW., Washington, 
DC. This Docket Facility is open from 8:30 a.m. to 4:30 p.m., Monday 
through Friday, excluding legal holidays. The EPA Docket Center 
telephone number is (202) 566-1742. The Public Reading Room is open 
from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal 
holidays. The telephone number for the Public Reading Room is (202) 
566-1744.

FOR FURTHER INFORMATION CONTACT: Christine Mikolajczyk, Environmental 
Protection Agency, Office of Transportation and Air Quality, Compliance 
and Innovative Strategies Division, 2000 Traverwood Drive, Ann Arbor, 
MI 48105, telephone number: (734) 214-4403; fax number: (734) 214-4503; 
e-mail address: mikolajczyk.christine@epa.gov.

SUPPLEMENTARY INFORMATION: 

I. Why Is EPA Using a Direct Final Rule?

    EPA is publishing this rule without a prior proposed rule because 
we view this as a non-controversial action and anticipate no adverse 
comment. However, in the ``Proposed Rules'' section of today's Federal 
Register, we are publishing a separate document that will serve as the 
proposed rule to amend EPA's fuel economy regulations if adverse 
comments are received on this direct final rule. We will not institute 
a second comment period on this action. Any parties interested in 
commenting must do so at this time. For further information about 
commenting on this rule, see the ADDRESSES section of this document.
    If EPA receives adverse comment on a distinct provision of this 
rulemaking, we will publish a timely withdrawal in the Federal Register 
indicating which provisions we are withdrawing. The provisions that are 
not withdrawn will become effective on the date set out above, 
notwithstanding adverse comment on any other provision.

II. Does This Action Apply to Me?

    This action applies to manufacturers of new passenger cars and 
light trucks, including medium-duty passenger vehicles.\1\ Regulated 
categories and entities include:
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    \1\ ``Passenger car,'' ``light truck,'' and ``medium-duty 
passenger vehicle'' are defined in 40 CFR 600.002-08. Generally, the 
term ``light truck'' means a pick-up truck, sport-utility vehicle, 
or minivan of up to 8,500 lbs gross vehicle weight rating, and 
``medium-duty passenger vehicle'' means a sport-utility vehicle or 
passenger van from 8,500 to 10,000 lbs gross vehicle weight rating. 
Medium-duty passenger vehicles do not include pick-up trucks.

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                                                                               Examples of potentially regulated
                 Category                            NAICS Codes\a\                         entities
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Industry.................................  336111, 336112....................  Motor vehicle manufacturers.
Industry.................................  811112, 811198, 541514............  Commercial Importers of Vehicles
                                                                                and Vehicle Components.
----------------------------------------------------------------------------------------------------------------
\a\ North American Industry Classification System (NAICS).

[[Page 61539]]

    This list is not intended to be exhaustive, but rather provides a 
guide regarding entities likely to be regulated by this action. To 
determine whether particular activities may be regulated by this 
action, you should carefully examine the regulations. You may direct 
questions regarding the applicability of this action to the person 
listed in FOR FURTHER INFORMATION CONTACT.

III. What Amendments Are Being Made in This Action?

    Today's direct final rule makes minor, non-controversial changes to 
EPA's fuel economy and emission regulations. Three separate actions 
have precipitated most of these changes. First, on December 27, 2006 
(71 FR 77872), EPA finalized regulations specifying new methods to 
determine the fuel economy label estimates posted on the window 
stickers of new cars and trucks. Second, on April 6, 2006 (71 FR 
17566), the Department of Transportation's National Highway Traffic 
Safety Administration (NHTSA), finalized new average fuel economy 
(CAFE) standards for 2008-2011 trucks. Third, on March 30, 2009 (74 FR 
14196), NHTSA revised CAFE requirements for 2011 trucks and finalized 
new average fuel economy (CAFE) standards for 2011 passenger 
automobiles. The EPA regulations being amended for these three actions 
are contained in 40 CFR Parts 86 and 600.
    Today's direct final rule clarifies that special test procedures, 
calculation methods and label formats may be used for fuel economy 
labels and CAFE calculations of advanced technology vehicles. Advanced 
technology vehicles include, but are not limited to electric vehicles, 
fuel cell vehicles, plug-in hybrid vehicles and vehicles equipped with 
hydrogen-fueled internal combustion engines. This rule also includes 
technical amendments to the fuel economy label regulations, including 
changes to the minivan definition, van definition, interior volume 
measurements of passenger vehicles, and special purpose class of 
vehicles. Today's action also corrects some typographical errors and 
makes other minor modifications to ensure accurate interpretation of 
the regulations. The changes to the EPA CAFE regulations are being made 
to conform to the NHTSA regulations, and include adding new reporting 
provisions that will enable EPA to provide NHTSA with the data it needs 
to determine compliance with the 2008-2011 CAFE standards for passenger 
automobiles and light trucks.
    In addition, two changes are being made to align the EPA CAFE 
regulations with a 2007 Energy Independence and Security Act (EISA) 
amendment extending the alternative fuel vehicle CAFE credits to 2019, 
and to align the EPA CAFE regulations with a previous NHTSA rulemaking 
which eliminated the requirement to report separate CAFE values for 
domestic and imported trucks.

A. Fuel Economy Labeling and CAFE Changes for Advanced Technology 
Vehicles

    According to 49 U.S.C. 32908, fuel economy labels are required for 
cars, light-duty trucks and other vehicles that meet the definition of 
automobile. For example, the provisions of 49 U.S.C. 32908 (b) read in 
part:

    ``(b) Labeling Requirements and Contents.--(1) Under regulations 
of the Administrator of the Environmental Protection Agency, a 
manufacturer of automobiles shall attach a label to a prominent 
place on each automobile manufactured in a model year. The dealer 
shall maintain the label on the automobile. The label shall contain 
the following information: * * *''

    On December 27, 2006, EPA finalized a new fuel economy labeling 
rule.\2\ Under this rulemaking, EPA regulations state that labeling 
requirements under Subpart D are applicable to 2008 and later model 
year cars and light-duty trucks and 2011 and later model year medium 
duty passenger vehicles (MDPVs).\3\ Prior to the 2008 model year, 
labeling requirements in Subpart D were applicable to gasoline-fueled, 
diesel-fueled, alcohol-fueled, natural gas fueled, alcohol dual fuel 
and natural gas dual fuel light-duty vehicles.
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    \2\ Fuel Economy Labeling of Motor Vehicles: Revisions To 
Improve Calculation of Fuel Economy Estimates; Final Rule; 71 FR 
77872, December 27, 2006.
    \3\ See 40 CFR 600.301-08(a). Note that the term ``automobile'' 
contained in 40 CFR 600.301-08(a) is defined in 40 CFR 600.002-08 as 
follows: ``Automobile has the meaning given by the Department of 
Transportation at 49 CFR 523.3.''
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    Under the regulations in 40 CFR Part 600, advanced technology 
vehicles are required to meet the labeling requirements for 
conventional vehicles. Advanced technology vehicles include battery 
electric vehicles, fuel cell vehicles, plug-in hybrid electric vehicles 
and vehicles equipped with hydrogen internal combustion engines. While 
the labeling regulations as written apply the same requirements and 
options to advanced technology vehicles as are applied to conventional 
technology vehicles, this was an inadvertent error. EPA adopted the 
labeling regulations based on it's evaluation of what would be 
appropriate for conventional technology vehicles, and did not evaluate 
what changes might or might not be appropriate for advanced technology 
vehicles. EPA did not intend that these types of vehicles would be 
required to meet all of the requirements for conventional vehicles. For 
example, the specific labeling requirements of this subpart were not 
intended to apply to plug-in hybrids. In EPA's Response to Comments-
Fuel Economy Labeling of Motor Vehicles, pages 53-54, EPA states:

    ``Bluewater Network commented that they believe plug-in hybrids 
will be commercially available in the future and EPA should consider 
how this emerging technology should be addressed with respect to 
fuel economy labeling and testing.''
    EPA's response:

    ``Commercial hybrids available today ultimately obtain all 
propulsion energy from liquid fuel stored in the fuel tank, while a 
plug-in hybrid uses a combination of liquid fuel and supplemental 
energy from the electric grid stored in the battery (i.e., overnight 
charge). Properly accounting for this supplemental electric energy 
is the central issue in assessing the performance of plug-in 
hybrids. Therefore, plug-in hybrids will require a more 
comprehensive assessment in order to determine the proper test 
procedures for fuel economy and emissions. Since plug-in hybrid 
technology is rapidly advancing, we will work with key stakeholders 
in the next few years to assess the appropriateness of the 5-cycle 
methodology in capturing the fuel economy impact of the plug-in 
technology. We agree strongly with those commenters urging against 
technology-specific adjustment factors. We are especially concerned 
that such an approach would create an uneven playing field across 
vehicles. We are aware that technologies are rapidly developing, and 
we intend to ensure, as part of our ongoing evaluation of the fuel 
economy test methods, that new and developing technologies are 
represented appropriately.'' (Complete document available at http://
www.epa.gov/fueleconomy/regulations.htm)

    In this context, EPA is revising several regulatory provisions in 
40 CFR Part 600 related to fuel economy testing, labeling and CAFE, to 
make appropriate modifications for use with advanced technology 
vehicles. EPA reviewed the various applicable regulations to determine 
where appropriate modifications were needed to address advanced 
technology vehicles. In large part this called for changes to 
regulations that address test procedures for test vehicles and 
calculation procedures to determine fuel economy for the test vehicle, 
as well as regulations that address what fuel economy value and other 
information the label is to include. The Agency's detailed analysis of 
the need for regulation changes to 40 CFR Part 600 regulations is 
outlined below.

[[Page 61540]]

1. Part 600 Subpart A
    Subpart A contains general applicability, definitions, 
abbreviations, recordkeeping requirements, data and information 
requirements for fuel economy vehicles, vehicle acceptability 
requirements, review of fuel economy data, minimum data requirements 
and other largely administrative requirements. EPA's review of the 
requirements contained in this subpart indicated that regulation 
changes are not needed to this Subpart for purposes of advanced 
technology vehicles.
2. Part 600 Subpart B
    Subpart B contains general applicability, definitions, 
abbreviations, recordkeeping requirements, equipment requirements, fuel 
specifications, analytical gas requirements, EPA driving cycles, 
equipment calibration, test procedures, exhaust sample analysis and 
fuel economy calculation requirements. EPA's review of the requirements 
contained in this subpart indicated that regulation changes are needed 
to 40 CFR 600.111-08 of Subpart B regarding fuel economy test 
procedures used for advanced technology vehicles. EPA reviewed 40 CFR 
600.111-08, which provides that manufacturers shall use the emissions 
test procedures from 40 CFR Part 86 for conducting FTP, HFET, the US06, 
SC03 and Cold temperature FTP tests for fuel economy. Part 86 allows 
for the use of special test procedures for emissions testing under 40 
CFR 86.1840 when the Administrator determines that a vehicle in Part 86 
``is not susceptible to satisfactory testing by the procedures set 
forth in this part.'' A similar provision is not explicitly included in 
Subpart B for fuel economy testing, nor is 40 CFR 86.1840 referred to 
as an option. Therefore, under this rulemaking, EPA is modifying 40 CFR 
600.111-08 to allow special test procedures for advanced technology 
vehicles not susceptible to satisfactory testing or testing results 
under the current test provisions. This can be allowed upon written 
application by the manufacturer and approval by the Administrator, or 
at the Administrator's own initiative.
    For example, the test procedures used for battery electric vehicles 
for the FTP (city), highway, US06, SC03, and cold temperature FTP tests 
contain many differences from those test procedures used for 
conventional vehicles outlined in 40 CFR 600.111-08. To illustrate this 
point, consider the FTP (city) test. While electric vehicles are driven 
over the same preconditioning cycle and test cycle as conventional 
vehicles, electric vehicles are not refueled (their battery is 
recharged) and electric vehicles are not required to undergo 
evaporative canister preconditioning prior to the test (they have no 
canisters). The test procedure for electric vehicles consists of 
operating the vehicle over many successive FTP (city) cycles until the 
battery becomes depleted to the point where the vehicle can no longer 
follow the driving cycle. The test procedure for conventional vehicles 
outlined in 40 CFR 600.111-08 consists of operating the vehicle over 
one FTP (city) cycle. While the test procedures for battery electric 
and conventional vehicles are similar in general (and comparable to 
1975 test procedures), the detailed step-by-step test procedures have 
many differences due to the inherent differences in the vehicles.
    Similarly for plug-in hybrid electric vehicles, EPA did not intend 
that plug-in hybrid electric vehicles would be required to meet all the 
specific fuel economy requirements contained in 40 CFR 600.111-08 for 
conventional vehicles. EPA is currently working on guidance for test 
procedures and fuel economy labeling requirements for plug-in hybrids. 
Plug-in hybrid vehicles typically have two operating modes: (1) 
Operation after the battery has been fully charged (called charge 
depleting mode) and (2) operation after the battery has been discharged 
and the vehicle is operating similar to conventional hybrid vehicles 
(called charge sustaining mode). The Agency anticipates that the fuel 
economy test procedures for plug-in hybrids will be similar to those 
for battery electric vehicles during the charge depleting mode and 
similar to conventional vehicles during the charge sustaining mode. 
While the test procedures for plug-in hybrid electric vehicles and 
conventional vehicles are expected to be similar in general (and 
comparable to 1975 test procedures), the detailed step-by-step test 
procedures for plug-in hybrid vehicles are expected to contain many 
differences from the step-by-step requirements described in 40 CFR 
600.111-08 due to the inherent differences in the vehicles.
    The data derived from Part 86 emissions tests and Part 600 fuel 
economy tests (using test procedures outlined in Part 600 Subpart B) 
are used to calculate the fuel economy values for each vehicle model. 
The methods to calculate the test vehicle's fuel economy for the 
specific test are provided in 40 CFR 600.113-08. For example, this 
section specifies how to calculate the fuel economy for the test 
vehicle for FTP, HFET, US06, SC03 and cold temperature FTP tests. These 
calculation procedures are specified for vehicles fueled with gasoline, 
diesel, alcohol-based or natural gas fuel. There are specific 
calculations for automobiles fueled with natural gas, methanol-fueled 
automobiles and automobiles designed to operate on mixtures of gasoline 
and methanol.\4\ Fuel economy for vehicles operated on other fuels not 
listed above may use calculations with advance approval from the 
Administrator.\5\
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    \4\ See 40 CFR 600.113-08 paragraphs (j) and (k).
    \5\ See 40 CFR 600.113-08 paragraph (l).
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    Currently, tests of conventional hybrids use the calculation 
methodology for the gasoline, diesel, or other fuel that they use, as 
EPA considers that the electric energy used by the hybrid originates in 
the combustion of the gasoline, diesel, or other fuel. Advanced 
technology vehicles however may need different calculation procedures. 
For example, plug-in hybrids may not be treated the same as 
conventional hybrids, as the plug-in hybrid operates in part on fuel 
such as gasoline and diesel, and in part on electric power that 
originates from the electricity grid and not from the combustion of the 
gasoline or diesel fuel. In that case, EPA would use the current 
provision at 40 CFR 600.113-08(l) to approve appropriate calculation 
procedures for use with plug-in hybrids. This same provision could be 
used for other advanced technology vehicles as well. Electric vehicles 
could also be covered by this provision, at least for purposes of 
calculating fuel economy of the test vehicle for later use in labeling. 
For purposes of CAFE, fuel economy calculation procedures are provided 
by the Department of Energy to determine the electric vehicles urban 
and highway fuel economy value.\6\ Based on the discretion already 
provided in 40 CFR 600.113-08(l), EPA does not believe that further 
modification is needed to this provision for purposes of calculating 
fuel economy for advanced technology test vehicles.
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    \6\ See 10 CFR 474.3 and 49 U.S.C. 32904(a)(2).
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    The use of special test procedures and appropriate fuel economy 
calculation methods for that test procedure, when determining the fuel 
economy of an advanced technology test vehicle, will affect both the 
fuel economy labeling and CAFE programs, as the fuel economy values 
from the test vehicles over the relevant test procedures are then used 
in both programs, under other provisions in Part 600.
    Once EPA or the manufacturer tests the vehicle, using appropriate 
test procedures, and calculates the fuel economy for the test vehicle 
over the tests, then 40 CFR 600.114-08 specifies how to calculate the 
5-cycle city and highway fuel economy values for that

[[Page 61541]]

test vehicle for purposes of labeling under Subpart D, including 
specific calculations for hybrid vehicles. 40 CFR 115-08 establishes 
criteria for determining the fuel economy label calculation method for 
2011 and later model year vehicles, mpg-based or 5-cycle, for test 
groups. Assuming appropriate test and calculation procedures have been 
used under 40 CFR 600.113-08 and 600.114-08, then no changes are needed 
to these provisions for advanced technology vehicles.
3. Part 600 Subpart C
    Subpart C contains general applicability, definitions, 
abbreviations, recordkeeping requirements, calculation of FTP-based and 
HFET-based fuel economy values, calculation of vehicle-specific 5-cycle 
based fuel economy values, calculation of fuel economy values for 
labeling requirements. EPA's review of the requirements contained in 
this subpart indicated that regulation changes are needed to 40 CFR 
600.210-08 of Subpart C for purposes of determining the fuel economy 
label values for advanced technology vehicles.
    Fuel economy values for vehicle configurations are calculated under 
the provisions of 40 CFR 600.206-08, for FTP-based and HFET-based fuel 
economy, and under 40 CFR 600.207-08, for vehicle-specific 5-cycle 
based fuel economy values for vehicle configurations. Fuel economy 
calculations to determine highway and city fuel economy for a model 
type are provided under 40 CFR 600.208-08, FTP-based and HFET-based 
fuel economy values for a model type, and section 40 CFR 600.209-08, 
vehicle-specific 5-cycle fuel economy values for a model type. These 
provisions apply to all 2008 and later model year light-duty 
automobiles.\7\ No revisions are needed to these provisions for 
advanced technology vehicles, as these provisions do not specify 
whether and how to use these values, but only how to calculate them.
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    \7\ See 40 CFR 600.201.
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    Section 600.210-08, however, specifies that manufacturers are to 
use either the 5 cycle value determined under 40 CFR 600.209-08, or the 
mpg derived value determined under 40 CFR 600.210-08, for fuel economy 
labeling for models. EPA is revising this section for advanced 
technology vehicles, so that the Administrator may prescribe an 
alternative method for determining the city and highway fuel economy 
values for general and specific labels for advanced technology 
vehicles. As discussed above, the 5-cycle and mpg-derived options were 
developed based on what was considered appropriate for conventional 
technology vehicles, and this will allow the Administrator to make 
changes, where appropriate, for use with advanced technology vehicles.
4. Part 600 Subpart D
    Subpart D contains general applicability, definitions, 
abbreviations, recordkeeping requirements, fuel economy label format, 
labeling of high altitude vehicles, range of fuel economy for 
comparable automobiles, label reporting and recordkeeping, timetable 
for data submittal, updating label values, classes of comparable 
automobiles and multistage manufacturer requirements. EPA's review of 
the requirements contained in this subpart indicated that regulation 
changes are needed to 40 CFR 600.307-08 of Subpart D for fuel economy 
label format requirements for advanced technology vehicles.
    Subpart D specifies the fuel economy value and other information to 
include on the label and the format of the label. The fuel economy 
values are those determined pursuant to Subpart C. As stated earlier, 
Subpart D includes advanced technology vehicles in its requirements. 
The format requirements of 40 CFR 600.307-08 may not be appropriate for 
some advanced technology vehicles. EPA is revising 40 CFR 600.307-08 so 
that alternative label formats may be approved for advanced technology 
vehicles.
5. Part 600 Subpart E
    Subpart E contains general applicability, definitions, 
abbreviations, dealer requirements and requirements to display booklets 
(Fuel Economy Guides) by dealers. EPA's review of the requirements 
contained in this subpart indicated that regulation changes are not 
needed to this Subpart for advanced technology vehicles.
6. Part 600 Subpart F
    Subpart F contains general applicability, definitions, 
abbreviations, recordkeeping requirements, running change data 
requirements, voluntary submission of additional data, calculation of 
average fuel economy (CAFE), determination of domestic production, 
model year report and gas guzzler tax requirements. EPA's review of the 
requirements contained in this subpart indicated that regulation 
changes are needed to 40 CFR 600.501-08 of this Subpart to clarify that 
this section is applicable to advanced technology vehicles.
    Subpart F, Procedures for Determining Manufacturer's Average Fuel 
Economy, is currently applicable to gasoline-fueled, diesel-fueled, 
alcohol-fueled, natural gas-fueled, alcohol dual fuel and natural gas 
dual fuel automobiles. Manufacturers that produce only electric 
vehicles and electric vehicles produced by small volume manufacturers 
are exempt from the requirements of this subpart, but may optionally 
comply with the requirements of this Subpart. In today's action, EPA is 
revising 40 CFR 600.501-93 so that advanced technology vehicles are 
included in Subpart F.
    Section 600.510-08 describes the requirements for calculating 
manufacturer's corporate average fuel economy (commonly called CAFE). 
Results of calculations from 40 CFR 600.208-08 and 40 CFR 600.206-08 
are used to determine CAFE using test procedures outlined in Subpart B. 
Since EPA is modifying Subpart B (40 CFR 600.111-08) to allow special 
test procedures for advanced technology vehicles, further modifications 
to Subpart F for advanced technology vehicles are not necessary.
    As discussed above, EPA's authority to approve special test 
procedures will be used, for example, to approve test procedure 
modifications used for testing battery electric vehicles, fuel cell 
vehicles, plug-in hybrid vehicles and hydrogen-fueled vehicles equipped 
with internal combustion engines. As in 1998 to 2003 model years, when 
battery electric vehicles were included in manufacturer's CAFE 
calculations, the Agency will take steps to assure that the test 
procedures for advanced technology vehicles will be comparable to 1975 
test procedures. While the Agency believes additional CAFE adjustments 
will not be necessary, EPA will follow the procedures specified in 40 
CFR 600.510-08(f) if any additional average fuel economy adjustments is 
appropriate for purposes of CAFE calculation based on a special test 
procedure change.

B. Fuel Economy Labeling

1. Minivan Definition
    On December 27, 2006 (71 FR 77872) EPA finalized the following 
definition for ``minivan'', which was previously not defined as a 
separate comparable class, for the purpose of labeling:

    ``Minivan means a light truck which is designed primarily to 
carry no more than eight passengers having an integral enclosure 
fully enclosing the driver, passenger, and load-carrying 
compartments, with a total interior volume at or below 180 cubic 
feet, and rear seats readily removed or folded to floor level to 
facilitate cargo carrying. A

[[Page 61542]]

minivan typically includes one or more sliding doors and a rear 
liftgate.'' [40 CFR 600.002-08.]

    The interior volume specification of no more than 180 cubic feet 
was included as a way to distinguish minvans from full-sized vans. 
However, after the labeling rule was finalized, we were informed by 
some manufacturers that their 2008 model year minivans exceeded the 180 
cubic feet interior volume limit, and thus would not be considered a 
minivan for purposes of showing comparison fuel economy on the label. 
Our intention in creating the minivan class was to provide consumers 
with better comparison information, based on actual classes of vehicles 
that they may be shopping for. It was not our intention to exclude 
vehicles that have for years been marketed and advertised as 
``minivans.'' Therefore, we are making two modifications to our 
regulations that will allow these vehicles to be considered as 
``minivans'' for the purpose of presenting comparable fuel economy 
information on the label.
    First, we are eliminating the total interior volume specification 
from the definition of ``minivan'' and updating the definition slightly 
to help avoid confusion with EPA's definition of full-sized vans. 
Absent the interior volume specification, the updated definition should 
be sufficient to distinguish the minivan class from full-size passenger 
and cargo vans, SUVs and other similar truck classes, in most cases. 
Second, in cases where the distinction between the different truck 
classes may be less clear, we are adding a provision to the truck 
classification regulations that parallels an existing provision for car 
classification which allows EPA to reclassify light trucks into a more 
appropriate classification, as appropriate. This added flexibility will 
allow EPA to better accommodate today's rapidly changing vehicle 
designs, not only for minivans, but for other designs that are gaining 
in popularity, such as the so-called ``crossover'' vehicles, which 
share attributes of minivans, SUVs and even station wagons.
2. Van Definition
    The current EPA ``Van'' definition has been used for fuel economy 
labeling purposes since before 1980, as follows:

    ``Van means any light truck having an integral enclosure fully 
enclosing the driver compartment and load-carrying device, and 
having no body sections protruding more than 30 inches ahead of the 
leading edge of the windshield.'' [40 CFR 600.002-08.]

    This definition was appropriate for vans which were marketed in the 
late 1970s and 1980s. However, over the past 20 years, the body styles 
of full sized vans have evolved to shapes with longer nose sections, 
where the nose of the van extends forward more than 30 inches from the 
leading edge of the windshield. This direct final rule makes a minor 
change in the ``Van'' definition to make it compatible with today's 
vehicles. The new definition will include vehicles that are considered 
to be full-sized vans, but have body sections which protrude more than 
30 inches forward of the leading edge of the windshield.
3. Interior Volume Measurements
    We did not propose any changes to the existing EPA regulations for 
determining the interior volumes of vehicles. The interior volume 
measurements have been used to determine the various passenger car 
classes since the early 1980's. We received no comments about the 
interior volume measurement methods during the new fuel economy label 
rulemaking. However, after the rule became final, some manufacturers 
pointed out that the basis for the measurements, an SAE procedure 
J1100, dated 1975, was outdated, and that the newly revised SAE J1100 
contained updated dimension codes which are referenced in our 
regulations. Rather than incorporating by reference the new version of 
the SAE procedure, we have simply updated some of the calculation 
procedures to be consistent with the new SAE methods, thus maintaining 
alignment with standard industry practices. In particular, the cargo 
volume index for station wagons is now calculated based on the average 
width of the cargo area (calculated by averaging the width at shoulder 
height and the width at the wheel wells), whereas it used to be based 
simply on the shoulder width measurement.
4. Special Purpose Vehicle Class of Comparable Vehicles
    We are also revising the regulations for the ``special purpose 
vehicle'' class of comparable vehicles to clarify that EPA has the 
discretion to classify advanced technology vehicles in separate 
comparable classes. For example, the Administrator may determine that 
advanced technology vehicles (such as battery electric vehicles, fuel 
cell vehicles, plug-in hybrid electric vehicles and vehicles equipped 
with hydrogen internal combustion engines) or other types of vehicles 
are best classified as a type of ``special purpose vehicle,'' separate 
from other classes of vehicles. EPA will work with manufacturers in 
determining the need for separate classes. EPA used a similar approach 
from the 1999 to 2007 model year to classify minivans and SUVs listed 
in the Fuel Economy Guide, however the label (window sticker) for these 
``special purpose vehicles'' included both minivans and SUVs until the 
regulations were revised for 2008 model year vehicles. Today's action 
provides EPA with the additional flexibility to determine appropriate 
names for such classes of vehicles, different from the name ``special 
purpose vehicle.''
    The provisions of 49 U.S.C. 32908(b) require fuel economy labels to 
contain ``the range of fuel economy of comparable automobiles of all 
manufacturers.'' Based on this authority, EPA regulations have 
traditionally required fuel economy labels to contain the highest and 
lowest fuel economy values for all vehicles in each comparable class. 
Separate city and highway ranges were required prior to model year 
2008. Beginning with 2008 model year, fuel economy labels are required 
to contain the highest and lowest combined (city/highway) fuel economy 
values for all vehicles within each comparable class of vehicles. 
Vehicle classes currently include two seaters, minicompact cars, 
subcompact cars, compact cars, midsize cars, large cars, small station 
wagons, midsize station wagons, large station wagons, small pickup 
trucks, standard pickup trucks, vans, minivans, sport utility vehicles 
(SUVs) and a ``catch-all'' class of ``special purpose vehicles.''
    EPA is concerned that advanced technology vehicles (which are 
beginning to be introduced into commerce is relative small numbers) \8\ 
may have fuel economy values which are an order of magnitude greater 
than conventional vehicles. Classifying these vehicles in the same 
comparable class of vehicles as conventional gasoline-fueled vehicles 
will tend to undermine the usefulness of providing the range of the 
highest and lowest mpg values within each vehicle class. For example, 
comparing mid-sized gasoline vehicles (mid-sized 2009 vehicles ranged 
from 11 to 46 combined city/highway mpg) to a mid-sized electric 
vehicle which gets 100 miles per gallon-equivalent makes all gasoline 
vehicles in the class appear to have very poor fuel economy. 
Furthermore, since the new technology vehicles may be available in such 
small

[[Page 61543]]

numbers initially (and for other reasons) manufacturers have commented 
that the new technology vehicles should not be compared to conventional 
vehicles.
---------------------------------------------------------------------------

    \8\ Some fuel cell vehicles are being sold or leased in very 
small volumes, e.g. 10 vehicles or less annually. Initially, 
electric vehicles, hydrogen-fueled vehicles and some plug-in hybrid 
vehicles are also expected to be sold or leased in limited numbers, 
perhaps 2-10 models per year with sales of less than 500 per model.
---------------------------------------------------------------------------

    In summary, today's action will provide EPA with the regulatory 
discretion to classify these advanced technology vehicles 
appropriately. For example, it may be appropriate to establish classes 
for electric-powered cars and electric-powered trucks. Again, we should 
emphasize that EPA will work with the affected manufacturers when 
determining the need for separate classes.
5. Other Certification and Fuel Economy Labeling Changes
    Today's action also includes the following minor changes and 
corrections:

------------------------------------------------------------------------
         40 CFR Cite                 Change           Reason for change
------------------------------------------------------------------------
Sec.   86.132-00(n).........  Clarify the           To make EPA
                               preconditioning       preconditioning
                               cycle used for EPA    consistent with
                               US06 tests.           Industry practice.
Sec.   86.135-90(c); Sec.     Revise extra cooling  To provide
 86.159-08(b)(9); Sec.         provisions to         flexibility in
 86.230-90(e)(3); Sec.         clarify that          extra cooling
 600.111-08(a)(9(ii).          variable speed        provisions. EPA
                               fan(s) may be used    experienced several
                               and/or the hood       test vehicle
                               closed if approved    problems in 2008
                               in advance by the     due to inherent
                               Administrator.        undercooling of
                                                     fixed speed fans.
Sec.   86.164-08              Clarify US06          Corrects errors to
 (c)(1)(i)(D)(2) and           ``highway'' portion   ensure consistent
 (c)(2)(i)(C)(2).              is 0-130 seconds *    test procedures and
                               * * instead of 1-     measurement
                               130 seconds.          methods.
                               Clarify that the
                               sampling system
                               should be turned
                               off 5 seconds after
                               the engine stops
                               running (e.g. 602
                               or 603 seconds)
                               instead of 596
                               seconds.
Sec.   86.210-08(a).........  The reference that    Corrects a
                               reads ``86.109-4''    typographical
                               should read           error.
                               ``86.109-94''.
Sec.   600.002-08...........  Revised definition    Add hydrogen and LPG
                               of ``Fuel.''.         (propane) to the
                                                     fuel definition.
Sec.   600.002-08...........  Revised definition    To be consistent
                               of ``Fuel Economy''   with current EPA
                               for electric          policy and ensure
                               vehicles.             accurate
                                                     interpretation of
                                                     the regulations.
Sec.   600.008-08(b)(3)(i)..  Correcting a          Corrects an error.
                               regulatory
                               reference. ``The
                               manufacturer may *
                               * * accept lower *
                               * * fuel economy
                               results for use in
                               Subpart C or F * *
                               *'' is changed to
                               read: ``The
                               manufacturer may *
                               * * accept lower *
                               * * fuel economy
                               results for use in
                               Subpart D or F * *
                               *''.
Sec.   600.107-08(c)........  Add test fuel         To ensure accurate
                               requirements for      interpretation of
                               fuels not             the regulations.
                               specifically
                               covered in Sec.
                               86.113, e.g.
                               ethanol, hydrogen,
                               LPG (propane).
Sec.   600.111-08             Clarify that the      To ensure accurate
 Introductory paragraph.       applicable test       interpretation of
                               procedures for fuel   the regulations.
                               economy data
                               vehicles are in
                               accordance with
                               Part 86 test
                               procedures,
                               including the
                               provisions of
                               86.1840 Special
                               Test Procedures and
                               other Part 86
                               subsections.
Sec.   600.113-08(h)(1).....  Correct error by      Corrects a
                               removing a            typographical
                               meaningless term,     error.
                               (``x C'' term) from
                               the mpg equation.
Sec.   600.113-08(k)........  In the definition     Corrects a
                               for DNG that          typographical
                               follows the formula   error.
                               for mpg, the ``3''
                               in the term ``ft3''
                               should be
                               superscripted,
                               i.e., ``ft3''.
Sec.   600.114-               Revise a term in the  Corrects a
 08(b)(2)(ii)(A).              equation for          typographical
                               StartFC from          error.
                               0.0055155 to
                               0.005515.
Sec.   600.114-               Revise a term in the  Corrects a
 08(c)(1)(i)(B).               equation for          typographical
                               Running FC from Bag   error.
                               320 3 FE to Bag 320
                               FE.
Sec.   600.115-08             Add text that         Requirements were
 Introductory paragraph.       clarifies that        outlined in
                               alternative fuel      preamble to the
                               vehicles and MDPVs    Final Rule at 71 FR
                               may continue to       77897-98 and 71 FR
                               base FE Label         77907, Dec 27,
                               values on mpg-based   2006, but were not
                               derived 5-cycle       clarified in
                               calculations in       regulatory text.
                               2011 and later
                               model year.
Sec.   600.115-08(a)(1)(i)..  Add ``(c)'' so the    To ensure accurate
                               paragraph will read   interpretation of
                               ``is determined       the regulations.
                               according to the
                               provisions of Sec.
                                600.114-08(a) or
                               (c) * * * ''
                               Paragraph (c) is
                               used to calculate
                               HEV 5-cycle FE
                               values.
Sec.   600.115-08(a)(1)(ii).  Replace ``(a)(i)''    Corrects a
                               with ``(a)(1)(i)''    typographical
                               in the sentence       error.
                               ``Using the same
                               FTP data as used in
                               paragraph (a)(i) *
                               * *''.
Sec.   600.210-08 (a).......  Clarify that          To ensure accurate
                               dedicated             interpretation of
                               alternative fueled    the regulations.
                               vehicles and dual
                               fueled vehicles
                               when operating on
                               alternative fuel
                               may use the derived
                               5-cycle method of
                               determining FE
                               labels. Allow
                               alternative label
                               methods in
                               paragraph (e) of
                               this section''.

[[Page 61544]]

Sec.   600.210-08 (a)(2)(i)   Clarify rounding.     Sec.   600.210-
 and (a)(2)(ii).               Clarify that MT FTP   08(a)(2)(i) and
                               FE and MT HFET FE     (ii) specify
                               should be rounded     rounding ``to the
                               to 4 decimal places.  nearest tenth;''
                                                     however referenced
                                                     paragraph 600.208-
                                                     08(b)(3) already
                                                     rounds model type
                                                     city & highway
                                                     values to 4 decimal
                                                     places. Change is
                                                     needed for
                                                     regulatory
                                                     consistency.
Sec.   600.210-08 (a)(2)(i).  Insert a space in     Corrects
                               ``MTFTP'' to make     typographical
                               it ``MT FTP.''        errors.
                               Correct reference
                               from ``600.208-
                               08(a)'' to
                               ``600.208-08(b)''.
Sec.   600.210-08 (a)(3)(i).  Correct a regulatory  Corrects a
                               reference. Correct    typographical
                               reference from        error.
                               ``paragraph (a)(1)
                               or (b)(2)'' to
                               ``paragraph (a)(1)
                               or (a)(2)''.
Sec.   600.315-08(b)(1).....  In 600.315-08,        Corrects a
                               paragraph (b)(1),     typographical
                               delete the ``A'' in   error.
                               the word ``Atwo'',
                               to read ``two
                               seater'' not ``Atwo
                               seater''.
------------------------------------------------------------------------

C. CAFE Amendments

1. New 2008-2011 Passenger Automobile and Truck CAFE Requirements
    In April, 2006, the National Highway Traffic Safety Administration 
(NHTSA) promulgated final rules which established CAFE standards for 
2008-2011 trucks.\9\ In these rules, NHTSA included two sets of 
standards, the first called ``Unreformed,'' applicable for 2008 through 
2010 model year trucks, and the second called ``Reformed,'' optional 
for 2008 through 2010 model year and required beginning with 2011 model 
year trucks. Then in March 2009, NHTSA promulgated a final rule which 
revised the 2011 truck ``reformed'' CAFE requirements and established 
new ``reformed'' CAFE standards for 2011 model year passenger 
automobiles.\10\ NHTSA's 2008-2011 CAFE requirements include two 
requirements which are not covered by EPA's current regulations.
---------------------------------------------------------------------------

    \9\ Ref. 71 FR 17566, April 6, 2006 and 71 FR 19449, April 14, 
2006.
    \10\ Ref. 74 FR 14196, March 30, 2009.
---------------------------------------------------------------------------

    First, NHTSA is for the first time requiring trucks known as 
``medium duty passenger vehicles'' (MDPVs) to be including in the 
manufacturers' fleet CAFE. NHTSA adopted the same criteria to define 
MDPVs as contained in EPA's Tier 2 emission regulations.\11\ NHTSA 
regulations define MDPVs as follows:
---------------------------------------------------------------------------

    \11\ See 65 FR 6698, February 10, 2000.

    ``Medium duty passenger vehicle means a vehicle which would 
satisfy the criteria in Sec.523.5 (relating to light trucks) but for 
its gross vehicle weight rating or its curb weight, which is rated 
at more than 8,500 lbs GVWR or has a vehicle curb weight of more 
than 6,000 pounds or has a basic vehicle frontal area in excess of 
45 square feet, and which is designed primarily to transport 
passengers, but does not include a vehicle that:
    (1) Is an ``incomplete truck'' as defined in this subpart; or
    (2) Has a seating capacity of more than 12 persons; or
    (3) Is designed for more than 9 persons in seating rearward of 
the
    driver's seat; or
    (4) Is equipped with an open cargo area (for example, a pick-up 
truck box or bed) of 72.0 inches in interior length or more. A 
covered box not readily accessible from the passenger compartment 
will be considered an open cargo area for purposes of this 
definition.'' [49 CFR 523.2]

    In EPA's recent fuel economy labeling rule, we also adopted this 
same definition and added labeling requirements for new MDPVs beginning 
in 2011, at the same time as the new ``reformed'' CAFE requirements 
take effect. However, we made no changes to our CAFE regulations at 
that time, saying that we would instead do so via today's separate 
regulatory action. We finalized the NHTSA definition of MDPV's in our 
regulations at 40 CFR 600.002-08 in the 2006 fuel economy labeling 
rule.\12\ NHTSA requires MDPVs to be included in CAFE starting in 2011, 
but in order to correctly implement NHTSA's new requirements we must 
make minor revisions to EPA regulations to enable MDPVs to be included 
in the CAFE calculations for 2011 and later.
---------------------------------------------------------------------------

    \12\ See 71 FR 77872, December 27, 2006.
---------------------------------------------------------------------------

    The second change needed to EPA CAFE regulations is to add 
manufacturer reporting requirements to the CAFE ``model year report'' 
submitted to EPA every year.\13\ Today's action will require the model 
year report to contain the applicable CAFE fuel economy standard (also 
called ``required fuel economy level'') and the basis for determining 
that required fuel economy level. According to NHTSA requirements, the 
``required fuel economy level'' for each manufacturer is based on the 
``footprint'' of the vehicles which are introduced into commerce by 
that manufacturer. Thus, today's action adds NHTSA's footprint 
definition, and footprint reporting requirements, including the 
features used to determine footprint, such as wheelbase, front track 
width, and rear track width.
---------------------------------------------------------------------------

    \13\ See 40 CFR 600.512-01.
---------------------------------------------------------------------------

2. Technical Amendments to Conform to the Energy Independence and 
Security Act of 2007
    The Energy Independence and Security Act of 2007 extended the 
provision allowing CAFE incentives for alternate fuel vehicles to 2019, 
codified at 42 U.S.C. 32905. In today's direct final rule, we have 
amended our fuel economy regulations to be consistent with the Energy 
Independence and Security Act of 2007.\14\ The Energy Independence and 
Security Act of 2007 provides that the maximum increase in average fuel 
economy for a manufacturer attributable to dual fueled ethanol and 
duel-fueled natural gas vehicles is as follows:
---------------------------------------------------------------------------

    \14\ Public Law 110-140, December 19, 2007.
---------------------------------------------------------------------------

    (1) 1.2 miles a gallon for each of model years 1993 through 2014;
    (2) 1.0 miles per gallon for model year 2015;
    (3) 0.8 miles per gallon for model year 2016;
    (4) 0.6 miles per gallon for model year 2017;
    (5) 0.4 miles per gallon for model year 2018;
    (6) 0.2 miles per gallon for model year 2019; and
    (7) 0 miles per gallon for model years after 2019.
    In addition, the Energy Independence and Security Act of 2007 
modified 49 U.S.C. 32906(b), removing the ``offsets'' to the maximum 
increase in average fuel economy in the event that NHTSA were to reduce 
the CAFE standard for passenger automobiles below 27.5 mpg.

[[Page 61545]]

3. Harmonization With NHTSA Rule Combining Domestic and Foreign Trucks 
Into a Single CAFE Averaging Set
    On April 4, 1994, NHTSA finalized regulations combining all 
domestic and imported trucks into a single truck class for CAFE 
purposes beginning with the 1996 model year.\15\ Previously, NHTSA's 
regulations required the calculation and reporting of separate domestic 
and imported truck CAFE values and EPA's CAFE regulations likewise 
included separate calculations. However, EPA regulations were not 
modified at the time that NHTSA changed its regulations.\16\ Thus, in 
today's action, we are removing the requirements for manufacturers to 
report separate import and domestic information and data for trucks. 
For consistency, today's action references NHTSA regulations for 
passenger car and light truck categories (although no change was needed 
to the domestic and import passenger car categories at this time).
---------------------------------------------------------------------------

    \15\ See 59 FR 16312, April 4, 1994.
    \16\ Regardless of the fact that EPA regulations have not been 
in alignment with NHTSA's, we have been providing NHTSA with the 
correct combined import/domestic truck CAFE calculations since that 
time.
---------------------------------------------------------------------------

4. Other CAFE Changes
    Today's action also includes the following minor changes and 
corrections:

------------------------------------------------------------------------
         40 CFR Cite                 Change           Reason for change
------------------------------------------------------------------------
Sec.   600.002-08...........  Revise light truck    Clarify that MDPVs
                               definition.           are included
                                                     beginning in 2011.
Sec.   600.010-08(d)........  Revised CAFE minimum  Clarify that city &
                               test requirements.    highway tests are
                                                     required for 2011
                                                     and later MDPVs.
Sec.   600.501-93...........  Revise Subpart F      Consistency with
                               applicability.        DOT; clarify that
                                                     MDPVs are included
                                                     in 2011 and later
                                                     CAFEs.
Sec.   600.510-08(e)........  In section 600.510-   To ensure accurate
                               08, paragraph (e),    interpretation of
                               in the expression     the regulations.
                               for ``IW'', an
                               extraneous letter
                               ``x'' that appears
                               to the left of a
                               multiplication sign
                               should be deleted.
Sec.   600.511-80(a)........  Added ``Except with   To allow exceptions
                               advance approval of   per 49 U.S.C.
                               the                   32904(b)(5); and 49
                               Administrator,''.     CFR 526.3.
Sec.   600.511-80(b)(5).....  Revise reference to   Correct errata due
                               U.S. Code per NHTSA   to a revision in
                               request.              U.S. Code.
------------------------------------------------------------------------

D. Miscellaneous Regulatory Corrections and Changes

    This Direct Final Rule includes a technical amendment to the 
Durability regulations applicable to Light-Duty Vehicles, Light-Duty 
Trucks and complete Heavy-Duty Vehicles. Specifically, the equation 
used to calculate the equivalency factors under the Durability Program 
was incorrect in the final rulemaking despite the fact that the notice 
of proposed rulemaking (NPRM) had the correct equation format. The 
equivalency factors are used to equate aging on the manufacturer's 
durability cycles to aging on the EPA standard cycles if a manufacturer 
uses their own proprietary aging cycle as allowed under the Durability 
regulations. Therefore, this action revises the Durability Program 
regulatory language using the correct equivalency factor equation 
format stated in the NPRM. The correction essentially involves 
reversing the numerator and denominator of the equivalency factor 
definition as stated at 40 CFR 86.1823-08(e)(1)(iii)(B)(1), such that 
the equivalency factor is stated correctly as follows: ``The 
equivalency factor is the ratio described by dividing the aging time on 
the alternative cycle by the aging time on the SRC.''
    Today's action also includes a minor revision to the 
preconditioning cycle used by EPA for the US06 test. Previously, the 
provisions of 40 CFR 86.132-00(n) require EPA to use a UDDS 
preconditioning cycle if the soak period since the last exhaust test is 
greater than two hours. Manufacturers may use a UDDS, a 505, 866, 
highway, US06 or an SC03 preconditioning cycle (if the soak period 
since the last exhaust test is greater than two hours) and it is common 
industry practice to use the US06 cycle. Today's action revises the 
provisions of 40 CFR 86.132-00(n) so that EPA preconditioning for the 
US06 is consistent with manufacturers. We believe that this revision 
will reduce EPA burden (because a UDDS cycle takes approximately 23 
minutes to run while a US06 cycle takes 10 minutes to run).

IV. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review

    Under Executive Order (EO) 12866 (58 FR 51735, October 4, 1993), 
this action is a ``significant regulatory action'' because it has the 
potential to raise novel legal or policy issues. Accordingly, EPA 
submitted this action to the Office of Management and Budget (OMB) for 
review under EO 12866 and any changes made in response to OMB 
recommendations have been documented in the docket for this action.

B. Paperwork Reduction Act

    This action does not impose any substantive new information 
collection burden under the provisions of the Paperwork Reduction Act, 
44 U.S.C. 3501 et seq. for the changes to the minivan definition, the 
requirements to include medium-duty passenger vehicles (MDPVs) in CAFE 
calculations, the additional CAFE footprint reporting requirements, or 
any other certification, fuel economy labeling and CAFE changes 
contained in this direct final rule. Burden is defined at 5 CFR 
1320.3(b). Note that the data submittal requirements to include MDPVs 
in 2011 and later CAFE data and to report footprint information for 
reformed CAFE have already been established by NHTSA in its final rules 
for new passenger automobile and truck CAFE standards,\17\ and the 
accompanying NHTSA ICR (OMB 2127-00019).
---------------------------------------------------------------------------

    \17\ See 49 CFR 537.7(c)(4), as amended by 71 FR 17678, April 6, 
2006 and 74 FR 14196, March 30, 2009.
---------------------------------------------------------------------------

    The revision to the minivan definition in today's action has a de 
minimis impact; however, if anything, the revision is expected to 
reduce manufacturers' information collection burden. For example, 
manufacturers were previously required to calculate and report to EPA 
the total interior volume of each style of minivan and full-sized van 
to determine whether the van was at or below 180 cubic feet in interior 
volume. Today's action eliminates the 180 cubic feet interior volume 
specification from the minivan definition, thus slightly reducing 
manufacturers reporting and recordkeeping burden.
    Regarding the MDPV requirements for 2011 and later CAFEs, the 
following

[[Page 61546]]

statement was made in EPA's Information Collection Request (ICR) for 
the 2008 Fuel Economy Labeling rule:

    ``Also beginning with model year 2011, medium-duty passenger 
vehicles (MDPVs) will be included in the labeling program. MDPVs 
essentially include SUVs and passenger vans that are between 8,500 
and 10,000 lbs. ``GVWR'' (gross vehicle weight ratings). This change 
is congruent with the National Highway Traffic Safety 
Administration's (NHTSA's) expansion of the Corporate Average Fuel 
Economy (CAFE) program to include MDPVs beginning the same model 
year (71 FR 17565; April 6, 2006). Because more vehicle testing is 
required under CAFE than under labeling, the impacts of increased 
testing for MDPVs will be in the ICR for the rule to implement EPA's 
role in the CAFE program, which will be finalized in a separate 
action, in time for model year 2011, or in the appropriate fuel 
economy program information collection renewal.'' \18\ (Emphasis 
added.)
---------------------------------------------------------------------------

    \18\ See 71 FR 77872, December 27, 2006.

    Thus, in the 2008 FE Label rulemaking EPA indicated we would either 
include the MDPV information collection requirements in an ICR for 
today's rulemaking or include it in the EPA's emission and fuel economy 
ICR renewal request to OMB (which occurs every three years). EPA 
elected the latter approach, and has included the additional MDPV 
testing, reporting and recordkeeping burden for fuel economy labeling 
and CAFE purposes in ICR 0783.54 (OMB 2060-0320), the renewal of the 
Motor Vehicle Emissions and Fuel Economy Compliance ICR which was 
submitted to OMB for review on October 23, 2008. Since EPA MDPV ICR 
requirements have been previously submitted to OMB and because they 
were also included in NHTSA's ICR (OMB 2127-00019), they are not 
included in today's action.
    Regarding footprint information, the reporting requirements for 
footprint information and related data were not specifically addressed 
in the ICR for EPA's Fuel Economy Labeling Rule (ICR 0783.51, OMB 2060-
0104) because any change in burden was considered to be negligible and 
within the margin of error for the information technology estimate in 
that ICR; and because the information collection burden was partially 
included in the NHTSA ICR (OMB 2127-00019). The information collection 
burden for footprint information is currently included in EPA's ICR 
0783.54 (OMB 2060-0320), the renewal of the Motor Vehicle Emissions and 
Fuel Economy Compliance ICR, which was submitted to OMB for review on 
October 23, 2008.
    Additionally, the footprint information reported to EPA for final 
CAFE reports (wheelbase, track width and sales information) is 
essentially the same information which will have been previously 
reported to NHTSA when manufacturers submitted their preliminary CAFE 
(PCAFE) and mid-model year CAFE reports to NHTSA. Reporting footprint 
information to EPA with final sales data is expected to be a minimal 
burden because manufacturers will have already established company 
business practices to track footprint and sales information for NHTSA 
and because manufacturers have been reporting CAFE final sales 
information to EPA since 1978.

C. Regulatory Flexibility Act

    The Regulatory Flexibility Act (RFA) generally requires an agency 
to prepare a regulatory flexibility analysis of any rule subject to 
notice and comment rulemaking requirements under the Administrative 
Procedure Act or any other statute unless the agency certifies that the 
rule will not have a significant economic impact on a substantial 
number of small entities. Small entities include small businesses, 
small organizations, and small governmental jurisdictions.
    For purposes of assessing the impacts of this direct final rule on 
small entities, a small entity is defined as: (1) A small business as 
defined by the Small Business Administration (SBA) regulations at 13 
CFR 121.201; (2) a small governmental jurisdiction that is a government 
of a city, county, town, school district or special district with a 
population of less than 50,000; and (3) a small organization that is 
any not-for-profit enterprise which is independently owned and operated 
and is not dominant in its field.
    After considering the economic impacts of this final rule on small 
entities, I certify that this action will not have a significant 
economic impact on a substantial number of small entities. Based on 
Small Business Administration size standards, small businesses in the 
automobile manufacturing industry are defined as those having less than 
1000 employees per firm. Additionally, they are identified using the 
North America Industrial Classification System (NAICS) by NAICS code 
336111. Out of a total of approximately 80 automotive manufacturers 
subject to this direct final rule, EPA estimates that approximately 10 
of these could be classified as small entities based on SBA size 
standards. No new burden for fuel economy labeling is being imposed by 
this direct final rule. The new reporting requirement for the reform 
CAFE footprint data has already been established by NHTSA in its final 
rule for new truck CAFE standards,\19\ and thus this direct final rule 
imposes no additional burden.
---------------------------------------------------------------------------

    \19\ See 49 CFR 537.7(c)(4), as amended by 71 FR 17678, Apr. 6, 
2006.
---------------------------------------------------------------------------

D. Unfunded Mandates Reform Act

    This rule does not contain a Federal mandate that may result in 
expenditures of $100 million or more for State, local, and Tribal 
governments, in the aggregate, or the private sector in any one year. 
This action simply makes minor amendments, clarifications, and 
corrections that will allow for the more effective administration of 
existing regulations. Thus, this rule is not subject to the 
requirements of sections 202 or 205 of the Unfunded Mandates Reform 
Act. This rule is also not subject to the requirements of section 203 
of the Unfunded Mandates Reform Act because it contains no regulatory 
requirements that might significantly or uniquely affect small 
governments. This action imposes no enforceable duty on any State, 
local or Tribal governments.

E. Executive Order 13132: Federalism

    Executive Order 13132, entitled ``Federalism'' (64 FR 43255, August 
10, 1999), requires EPA to develop an accountable process to ensure 
``meaningful and timely input by State and local officials in the 
development of regulatory policies that have federalism implications.'' 
``Policies that have federalism implications'' is defined in the 
Executive Order to include regulations that have ``substantial direct 
effects on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government.''
    This direct final rule does not have federalism implications. It 
will not have substantial direct effects on the States, on the 
relationship between the national government and the States, or on the 
distribution of power and responsibilities among the various levels of 
government, as specified in Executive Order 13132. Thus, Executive 
Order 13132 does not apply to this rule.

F. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    This action does not have Tribal implications, as specified in 
Executive Order 13175 (65 FR 67249, November 9, 2000). The impacts of 
this direct final rule are limited to the regulated entities: the 
automotive manufacturing industry. Thus, Executive Order 13175 does not 
apply to this action.

[[Page 61547]]

G. Executive Order 13045 ``Protection of Children From Environmental 
Health Risks and Safety Risks''

    Executive Order 13045: ``Protection of Children from Environmental 
Health Risks and Safety Risks'' (62 FR 19885, April 23, 1997) applies 
to any rule that: (1) Is determined to be ``economically significant'' 
as defined under Executive Order 12866, and (2) concerns an 
environmental health or safety risk that EPA has reason to believe may 
have a disproportionate effect on children. If the regulatory action 
meets both criteria, the Agency must evaluate the environmental health 
or safety effects of the planned rule on children, and explain why the 
planned regulation is preferable to other potentially effective and 
reasonably feasible alternatives considered by the Agency.
    EPA interprets EO 13045 (62 FR 19885, April 23, 1997) as applying 
only to those regulatory actions that concern health or safety risks, 
such that the analysis required under section 5-501 of the EO has the 
potential to influence the regulation. This action is not subject to EO 
13045 because it does not establish an environmental standard intended 
to mitigate health or safety risks.

H. Executive Order 13211 (Energy Effects)

    This rule is not a ``significant energy action'' as defined in 
Executive Order 13211, ``Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use'' (66 FR 
28355, May 22, 2001) because it is not likely to have a significant 
adverse effect on the supply, distribution, or use of energy. Further, 
we have concluded that this rule is not likely to have any adverse 
energy effects.

I. National Technology Transfer Advancement Act

    Section 12(d) of the National Technology Transfer and Advancement 
Act of 1995 (``NTTAA''), Public Law 104-113, 12(d) (15 U.S.C. 272 note) 
directs EPA to use voluntary consensus standards in its regulatory 
activities unless to do so would be inconsistent with applicable law or 
otherwise impractical. Voluntary consensus standards are technical 
standards (e.g., materials specifications, test methods, sampling 
procedures, and business practices) that are developed or adopted by 
voluntary consensus standards bodies. NTTAA directs EPA to provide 
Congress, through OMB, explanations when the Agency decides not to use 
available and applicable voluntary consensus standards.
    This action does not involved technical standards. Therefore, EPA 
did not consider the use of any voluntary consensus standards.

J. Executive Order 12898: Federal Actions To Address Environmental 
Justice in Minority Populations and Low-Income Populations

    Executive Order (EO) 12898 (59 FR 7629, Feb. 16, 1994) establishes 
Federal executive policy on environmental justice. Its main provision 
directs Federal agencies, to the greatest extent practicable and 
permitted by law, to make environmental justice part of their mission 
by identifying and addressing, as appropriate, disproportionately high 
and adverse human health or environmental effects of their programs, 
policies, and activities on minority populations and low-income 
populations in the United States.
    EPA has determined that this direct final rule will not have 
disproportionately high and adverse human health or environmental 
effects on minority or low-income populations because it does not 
affect the level of protection provided to human health or the 
environment. This action simply makes minor amendments, clarifications, 
and corrections that will allow for the more effective administration 
of existing regulations without impacting the current fuel economy and 
emission control measures.

K. Congressional Review Act

    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a copy of the rule, 
to each House of the Congress and to the Comptroller General of the 
United States. EPA will submit a report containing this rule and other 
required information to the U.S. Senate, the U.S. House of 
Representatives, and the Comptroller General of the United States prior 
to publication of the rule in the Federal Register. A Major rule cannot 
take effect until 60 days after it is published in the Federal 
Register. This action is not a ``major rule'' as defined by 5 U.S.C. 
804(2). This rule will be effective January 25, 2010.

L. Statutory Provisions and Legal Authority

    Statutory authority for the fuel economy labeling program and for 
corporate average fuel economy can be found at 42 U.S.C. 7401-7671q, 49 
U.S.C. 32901-32919, and Public Law 109-58. Statutory authority for 
vehicle emission control program is found in the Clean Air Act, as 
amended, 42 U.S.C. 7401 et seq., in particular sections 202 and 206 of 
the Act, 42 U.S.C. 7521 and 7525.

List of Subjects

40 CFR Part 86

    Administrative practice and procedure, Confidential business 
information, Incorporation by reference, Labeling, Motor vehicle 
pollution, Reporting and recordkeeping requirements.

40 CFR Part 600

    Administrative practice and procedure, Electric power, Fuel 
economy, Incorporation by reference, Labeling, Reporting and 
recordkeeping requirements.

    Dated: November 9, 2009.
Lisa P. Jackson,
Administrator.

0
For the reasons set forth in the preamble, parts 86 and 600 of title 
40, chapter I of the Code of Federal Regulations, are amended as 
follows:

PART 86--CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES 
AND ENGINES

0
1. The authority citation for part 86 continues to read as follows:

    Authority: 42 U.S.C. 7401-7671q.

Subpart B--[Amended]

0
2. Amend Sec.  86.132-00 by revising paragraph (n)(1)(i) and removing 
and reserving paragraph (n)(1)(ii) to read as follows:

Sec.  86.132-00  Vehicle preconditioning.

* * * * *
    (n) * * *
    (1) * * *
    (i) Preconditioning may consist of a 505, 866, highway, US06 or 
SC03 test cycles.
    (ii) [Reserved]
* * * * *

0
3. Amend Sec.  86.135-90 by revising paragraph (b) to read as follows:

Sec.  86.135-90  Dynamometer procedure.

* * * * *
    (b) During dynamometer operation, a fixed speed cooling fan shall 
be positioned so as to direct cooling air to the vehicle in an 
appropriate manner with the engine compartment cover open. In the case 
of vehicles with front engine compartments, the fan shall be squarely 
positioned within 12 inches (30.5 centimeters) of the vehicle. In the 
case of vehicles with rear engine compartments (or if special designs

[[Page 61548]]

make the above impractical), the cooling fan shall be placed in a 
position to provide sufficient air to maintain vehicle cooling. The fan 
capacity shall normally not exceed 5300 cfm (2.50 m3/sec). If however, 
the manufacturer can show that during field operation the vehicle 
receives additional cooling, and that such additional cooling is needed 
to provide a representative test, the fan capacity may be increased, 
additional fans used, variable speed fan(s) may be used, and/or the 
engine compartment cover may be closed if approved in advance by the 
Administrator. For example, the hood may be closed to provide adequate 
air flow to an intercooler through a factory installed hood scoop. 
Additionally, the Administrator may conduct certification, fuel economy 
and in-use testing using the additional cooling set-up approved for a 
specific vehicle.
* * * * *

0
4. Amend Sec.  86.159-08 by revising paragraph (b)(9) to read as 
follows:

Sec.  86.159-08  Exhaust emission test procedures for US06 emissions.

* * * * *
    (b) * * *
    (9) During dynamometer operation, a fixed speed cooling fan with a 
maximum discharge velocity of 15,000 cfm will be positioned so as to 
direct cooling air to the vehicle in an appropriate manner with the 
engine compartment cover open. In the case of vehicles with front 
engine compartments, the fan shall be positioned within 24 inches (61 
centimeters) of the vehicle. In the case of vehicles with rear engine 
compartments (or if special designs make the above impractical), the 
cooling fan(s) shall be placed in a position to provide sufficient air 
to maintain vehicle cooling. The Administrator may approve modified 
cooling configurations, additional cooling, variable speed fan(s), and/
or a closed engine compartment cover if necessary to satisfactorily 
perform the test. In approving requests for additional or modified 
cooling, the Administrator will consider such items as actual road 
cooling data and whether such additional cooling is needed to provide a 
representative test. For example, the hood may be closed to provide 
adequate air flow to an intercooler through a factory installed hood 
scoop. Additionally, the Administrator may conduct certification, fuel 
economy and in-use testing using the additional cooling set-up approved 
for a specific vehicle.
* * * * *

0
5. Amend Sec.  86.164-08 by revising paragraphs (c)(1)(i)(D)(2) and 
(c)(2)(i)(C)(2) to read as follows:

Sec.  86.164-08  Supplemental Federal Test Procedure calculations.

* * * * *
    (c) * * *
    (1) * * *
    (i) * * *
    (D) * * *
    (2) In the case of a 2-phase US06 test run according to the 
provisions of Sec.  86.159-08(f)(2) and part 600 of this chapter:
    YUS06 = Calculated mass emissions per mile, using the summed mass 
emissions of the ``US06 City'' phase and the ``US06 Highway'' phase, 
based on the measured driving distance of the US06 test schedule. The 
``US06 City'' phase shall be sampled during seconds 0-130 and from 495 
seconds until five seconds after the engine stops running (e.g. 602 or 
603 seconds) of the US06 driving schedule. The ``US06 Highway'' phase 
shall be sampled during seconds 130-495 of the US06 driving schedule),
* * * * *
    (2) * * *
    (i) * * *
    (C) * * *
    (2) In the case of a 2-phase US06 test run according to the 
provisions of Sec.  86.159-08(f)(2) and part 600 of this chapter:
    YUS06 = Calculated mass emissions per mile, using the summed mass 
emissions of the ``US06 City'' phase and the ``US06 Highway'' phase, 
based on the measured driving distance of the US06 test schedule. The 
``US06 City'' phase shall be sampled during seconds 0-130 and from 495 
seconds until five seconds after the engine stops running (e.g. 602 or 
603 seconds) of the US06 driving schedule. The ``US06 Highway'' phase 
shall be sampled during seconds 130-495 of the US06 driving schedule),
* * * * *

0
6. Section 86.210-08 is amended by revising paragraph (a) introductory 
text to read as follows:

Sec.  86.210-08  Exhaust gas sampling system; Diesel-cycle vehicles not 
requiring particulate emissions measurements.

    (a) General applicability. The exhaust gas sampling system 
requirements of Sec.  86.109-94 (which apply to Otto-cycle vehicles), 
also apply to diesel vehicles that are not required to undergo 
particulate measurement as allowed under Sec.  600.111-08(e) of this 
chapter, except that heated flame ionization detector (HFID), probe, 
sample lines and filters are required as described as follows:
* * * * *

0
7. Section 86.230-11 is amended by revising paragraph (e)(3) to read as 
follows:

Sec.  86.230-11  Test sequence: general requirements.

* * * * *
    (e) * * *
    (3) The manufacturer may use, for certification and fuel economy 
testing, alternative engine compartment cooling fans or systems, 
including those which provide a variable air flow, if the manufacturer 
has determined that comparable results are obtained. Manufacturers may 
perform the test with the engine compartment closed, e.g. to provide 
adequate air flow to air flow to an intercooler through a factory 
installed hood scoop, if needed to provide a representative test. 
Additionally, the Administrator may conduct certification, fuel economy 
and in-use testing using the additional cooling set-up approved for a 
specific vehicle.
* * * * *

0
8. Section 86.230-94 is amended by revising paragraph (e)(3) to read as 
follows:

Sec.  86.230-94  Test sequence: general requirements.

* * * * *
    (e) * * *
    (3) The manufacturer may use, for certification and fuel economy 
testing, alternative engine compartment cooling fans or systems, 
including those which provide a variable air flow, if the manufacturer 
has determined that comparable results are obtained. For 2009 and later 
model year vehicles, manufacturers may perform the test with the engine 
compartment closed, e.g. to provide adequate air flow to air flow to an 
intercooler through a factory installed hood scoop, if needed to 
provide a representative test. For 2009 and later model year vehicles, 
the Administrator may conduct certification, fuel economy and in-use 
testing using the additional cooling set-up approved for a specific 
vehicle.
* * * * *

0
9. Section 86.1823-08 is amended by revising paragraph 
(e)(1)(iii)(B)(1) to read as follows:

Sec.  86.1823-08  Durability demonstration procedures for exhaust 
emissions.

* * * * *
    (e) * * *
    (1) * * *
    (iii) * * *
    (B) * * *
    (1) The equivalency factor may be determined by an evaluation of 
the SRC and the customized/alternative cycle

[[Page 61549]]

using catalyst time-at-temperature data from both cycles with the BAT 
equation to calculate the required bench aging time of each cycle. Once 
the bench aging time is calculated for each cycle, the equivalency 
factor is the ratio described by dividing the bench aging time on the 
customized/alternative cycle by the bench aging time on the SRC.
* * * * *

PART 600--FUEL ECONOMY OF VEHICLES

0
10. The authority citation for part 600 continues to read as follows:

    Authority: 49 U.S.C. 32901-23919q, Public Law 109-58.

Subpart A--[Amended]

0
11. Section 600.002-08 is amended as follows:
0
a. In the definition of ``Fuel,'' paragraph (4) is amended by removing 
the period and adding in its place ``; or''.
0
b. By adding paragraphs (5) and (6) to the definition of ``Fuel.''
0
c. By revising paragraph (2) of the definition of ``Fuel economy.''
0
d. By revising the definition of ``Light truck.''
0
e. By revising the definition of ``Minivan.''
0
f. By revising the definition of ``Van.''

Sec.  600.002-08  Definitions.

* * * * *
    Fuel means:
* * * * *
    (5) Liquid Petroleum Gas (LPG), commonly referred to as 
``propane,'' for LPG-powered automobiles; or
    (6) Hydrogen for hydrogen fuel cell automobiles and for automobiles 
equipped with hydrogen internal combustion engines.
    Fuel economy means:
* * * * *
    (2) For the purpose of calculating average fuel economy pursuant to 
the provisions of Part 600, Subpart F, fuel economy for electrically 
powered automobiles means the equivalent petroleum-based fuel economy 
as determined by the Secretary of Energy in accordance with the 
provisions of 10 CFR 474.
* * * * *
    Light truck means an automobile that is not a passenger automobile, 
as defined by the Secretary of Transportation at 49 CFR 523.5. This 
term is interchangeable with ``non-passenger automobile.'' The term the 
``light truck'' includes medium-duty passenger vehicles which are 
manufactured during 2011 and later model years.
* * * * *
    Minivan means a light truck which is designed primarily to carry no 
more than eight passengers, having an integral enclosure fully 
enclosing the driver, passenger, and load-carrying compartments, and 
rear seats readily removed, folded, stowed, or pivoted to facilitate 
cargo carrying. A minivan typically includes one or more sliding doors 
and a rear liftgate. Minivans typically have less total interior volume 
or overall height than full sized vans and are commonly advertised and 
marketed as ``minivans.''
* * * * *
    Van means any light truck having an integral enclosure fully 
enclosing the driver compartment and load carrying compartment. The 
distance from the leading edge of the windshield to the foremost body 
section of vans is typically shorter than that of pickup trucks and 
SUVs.
* * * * *

0
12. Section 600.010-08 is amended by revising paragraph (d) to read as 
follows:

Sec.  600.010-08  Vehicle test requirements and minimum data 
requirements.

* * * * *
    (d) Minimum data requirements for the manufacturer's average fuel 
economy. For the purpose of calculating the manufacturer's average fuel 
economy under Sec.  600.510, the manufacturer shall submit FTP (city) 
and HFET (highway) test data representing at least 90 percent of the 
manufacturer's actual model year production, by configuration, for each 
category identified for calculation under Sec.  600.510-08(a).

0
13. Section 600.011-93 is amended by revising paragraph (a) and by 
adding paragraph (b)(3) to read as follows:

Sec.  600.011-93  Reference materials.

    (a) Incorporation by reference. The documents in paragraph (b) of 
this section have been incorporated by reference. The incorporation by 
reference was approved by the Director of the Federal Register in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be 
inspected at the U.S. Environmental Protection Agency, Office of Air 
and Radiation, 1200 Pennsylvania Ave., NW., Washington, DC 20460, phone 
(202) 272-0167, or at the National Archives and Records Administration 
(NARA). For information on the availability of this material at NARA, 
call 202-741-6030, or go to: http://www.archives.gov/federal_register/
code_of_federal_regulations/ibr_locations.html.
    (b) * * *
    (3) SAE Material. The following table sets forth material from the 
Society of Automotive Engineers that has been incorporated by 
reference. The first column lists the number and name of the material. 
The second column lists the section(s) of this part, other than Sec.  
600.011-93, in which the matter is referenced. The second column is 
presented for information only and may not be all inclusive. Copies of 
these materials may be obtained from Society of Automotive Engineers 
World Headquarters, 400 Commonwealth Dr., Warrendale, PA 15096-0001, 
phone (877) 606-7323 (U.S. and Canada) or (724) 776-4970 (outside the 
U.S. and Canada), or at http://www.sae.org.

------------------------------------------------------------------------
      Document No. and name              40 CFR part 600 reference
------------------------------------------------------------------------
Motor Vehicle Dimensions--         600.315-08; 600.315-82.
 Recommended Practice SAE 1100a
 (Report of Human Factors
 Engineering Committee, Society
 of Automotive Engineers,
 approved September 1973 as
 revised September 1975).
------------------------------------------------------------------------

Subpart B--[Amended]

0
14. Section 600.107-08 is amended by adding paragraph (c) to read as 
follows:

Sec.  600.107-08  Fuel Specifications.

* * * * *
    (c) Test fuels which do not have fuel specifications provided in 
the provisions of Sec.  86.113 of this chapter may be used if approved 
in advance by the Administrator.

0
15. Section 600.111-08 is amended as follows:
0
a. By adding introductory text to this Sec.  600.111-08.
0
b. By revising paragraph (b)(9)(ii).
0
c. By adding paragraph (f).

Sec.  600.111-08  Test Procedures.

    This section provides test procedures for the FTP, highway, US06, 
SC03, and the cold temperature FTP tests. Testing shall be performed 
according to test procedures and other requirements contained in Part 
86 and Part 600 of this

[[Page 61550]]

chapter, including the provisions of Part 86, Subparts B, C, and S.
* * * * *
    (b) * * *
    (9) * * *
    (ii) Open the vehicle engine compartment cover and position the 
cooling fan(s) required. Manufacturers may request the use of 
additional cooling fans or variable speed fan(s) for additional engine 
compartment or under-vehicle cooling and for controlling high tire or 
brake temperatures during dynamometer operation. With prior EPA 
approval, manufacturers may perform the test with the engine 
compartment closed, e.g. to provide adequate air flow to an intercooler 
(through a factory installed hood scoop). Additionally, the 
Administrator may conduct fuel economy testing using the additional 
cooling set-up approved for a specific vehicle.
* * * * *
    (f) Special Test Procedures. The Administrator may prescribe test 
procedures, other than those set forth in this Subpart B, for any 
vehicle which is not susceptible to satisfactory testing and/or testing 
results by the procedures set forth in this part. For example, special 
test procedures may be used for advanced technology vehicles, 
including, but not limited to battery electric vehicles, fuel cell 
vehicles, plug-in hybrid electric vehicles and vehicles equipped with 
hydrogen internal combustion engines. Additionally, the Administrator 
may conduct fuel economy testing using the special test procedures 
approved for a specific vehicle.

0
16. Section 600.113-08 is amended by revising paragraphs (h)(1) and (k) 
to read as follows:

Sec.  600.113-08  Fuel Economy Calculations for FTP, HFET, US06, and 
cold temperature FTP tests.

* * * * *
    (h)(1) For gasoline-fueled automobiles tested on test fuel 
specified in Sec.  86.113-04(a), the fuel economy in miles per gallon 
is to be calculated using the following equation:

mpg = (5174 x 10\4\ x CWF x SG)/[((CWF x HC) + (0.429 x CO) + (0.273 x 
CO2)) x ((0.6 x SG x NHV) + 5471)]

Where:

HC = Grams/mile HC as obtained in paragraph (g) of this section.
CO = Grams/mile CO as obtained in paragraph (g) of this section.
CO2 = Grams/mile CO2 as obtained in paragraph 
(g) of this section.
CWF = Carbon weight fraction of test fuel as obtained in paragraph 
(g) of this section.
NHV = Net heating value by mass of test fuel as obtained in 
paragraph (g) of this section.
SG = Specific gravity of test fuel as obtained in paragraph (g) of 
this section.
* * * * *
    (k) For automobiles fueled with natural gas, the fuel economy in 
miles per gallon of natural gas is to be calculated using the following 
equation:

    [GRAPHIC] [TIFF OMITTED] TR25NO09.222
    
Where:

mpge = miles per equivalent gallon of natural gas.
CWFHC/NG = carbon weight fraction based on the 
hydrocarbon constituents in the natural gas fuel as obtained in 
paragraph (g) of this section.
DNG = density of the natural gas fuel [grams/ft\3\ at 68 
[deg]F (20 [deg]C) and 760 mm Hg (101.3 kPa)] pressure as obtained 
in paragraph (g) of this section.
CH4, NMHC, CO, and CO2 = weighted mass exhaust 
emissions [grams/mile] for methane, non-methane HC, carbon monoxide, 
and carbon dioxide as calculated in Sec.  600.113.
CWFNMHC = carbon weight fraction of the non-methane HC 
constituents in the fuel as determined from the speciated fuel 
composition per paragraph (f)(3) of this section.
CO2NG = grams of carbon dioxide in the natural gas fuel 
consumed per mile of travel.
[GRAPHIC] [TIFF OMITTED] TR25NO09.223

Where:

[GRAPHIC] [TIFF OMITTED] TR25NO09.224

= cubic feet of natural gas fuel consumed per mile.
CWFNG = the carbon weight fraction of the natural gas 
fuel as calculated in paragraph (f) of this section.
WFCO2 = weight fraction carbon dioxide of the natural gas 
fuel calculated using the mole fractions and molecular weights of 
the natural gas fuel constituents per ASTM D 1945-91 ``Standard Test 
Method for Analysis of Natural Gas by Gas Chromatography'' 
(incorporated by reference at Sec.  600.011-93).
* * * * *
0
17. Section 600.114-08 is amended by revising paragraphs (b)(2)(ii)(A) 
and (c)(1)(i)(B) to read as follows:

Sec.  600.114-08  Vehicle-specific 5-cycle fuel economy calculations.

    (b) * * *
    (2) * * *
    (ii) * * *
    [GRAPHIC] [TIFF OMITTED] TR25NO09.225
    
Where:

[[Page 61551]]

[GRAPHIC] [TIFF OMITTED] TR25NO09.226

Where:

Bag y FE75 = the fuel economy in miles per gallon of fuel 
during the specified bag of the FTP test conducted at an ambient 
temperature of 75 [deg]F.
* * * * *
    (c) * * *
    (1) * * *
    (i) * * *
    [GRAPHIC] [TIFF OMITTED] TR25NO09.227
    
Where:

BagYX FE = the fuel economy in miles per gallon of fuel 
during the specified bag Y of the FTP test conducted at an ambient 
temperature X of 75 [deg]F or 20 [deg]F.
US06 City FE = fuel economy in miles per gallon over the city 
portion of the US06 test.
SC03 FE = fuel economy in miles per gallon over the SC03 test.
* * * * *

0
18. Section 600.115-08 is amended as follows:
0
a. By revising the introductory text.
0
b. By revising paragraph (a)(1)(i).
0
c. By revising paragraph (a)(1)(ii).

Sec.  600.115-08  Criteria for determining the fuel economy label 
calculation method for 2011 and later model year vehicles.

    This section provides the criteria to determine if the derived 5-
cycle method for determining fuel economy label values, as specified in 
Sec.  600.210-08 (a)(2) or (b)(2), as applicable, may be used to 
determine label values for 2011 and later model year vehicles. Separate 
criteria apply to city and highway fuel economy for each test group. 
The provisions of this section are optional. If this option is not 
chosen, or if the criteria provided in this section are not met, fuel 
economy label values for 2011 and later model year vehicles must be 
determined according to the vehicle-specific 5-cycle method specified 
in Sec.  600.210-08(a)(1) or (b)(1), as applicable. However, dedicated 
alternative-fuel vehicles, dual fuel vehicles when operating on 
alternative fuel, and MDPVs may use the derived 5-cycle method for 
determining fuel economy labels for 2011 and later model years whether 
or not the criteria provided in this section are met.
    (a) * * *
    (1) * * *
    (i) The vehicle-specific 5-cycle city fuel economy from the 
official FTP, HFET, US06, SC03 and Cold FTP tests for the test group is 
determined according to the provisions of Sec.  600.114-08(a) or (c) 
and rounded to the nearest one tenth of a mile per gallon.
    (ii) Using the same FTP data as used in paragraph (a)(1)(i) of this 
section, the corresponding derived 5-cycle city fuel economy is 
calculated according to the following equation:
[GRAPHIC] [TIFF OMITTED] TR25NO09.228

Where:

City Intercept = Intercept determined by the Administrator. See 
Sec.  600.210-08(a)(2)(iii).
City Slope = Slope determined by the Administrator. See Sec.  
600.210-08(a)(2)(iii).
FTP FE = the FTP-based city fuel economy from the official test used 
for certification compliance, determined under Sec.  600.113-08(a), 
rounded to the nearest tenth.
* * * * *

0
19. Section 600.210-08 is amended as follows:
0
a. By revising paragraph (a) introductory text.
0
b. By revising paragraphs (a)(2)(i) and (a)(2)(ii).
0
c. By revising paragraph (a)(3)(i).
0
d. By adding paragraph (e).

Sec.  600.210-08  Calculation of fuel economy values for labeling.

    (a) General Labels. Except as permitted in paragraph (e) of this 
section, fuel economy for general labels can be determined by two 
methods. The first is based on vehicle-specific model-type 5-cycle data 
as determined in Sec.  600.209-08(b). This method is optional beginning 
in the 2008 model year for all vehicles, including medium-duty 
passenger vehicles, and required beginning in the 2011 model year 
(except for dedicated alternative-fuel vehicles, dual fuel vehicles 
when operating on alternative fuel, and medium duty passenger vehicles) 
unless otherwise indicated according to the provisions in Sec.  
600.115-08. The second method is the derived 5-cycle method, and is 
based on fuel economy that is derived from vehicle-specific 5-cycle 
model type data as determined in paragraph (a)(2) of this section. This 
method is required for 2008 through 2010 model years (except for 
medium-duty passenger vehicles, in which case it is optional), and is 
permitted beginning in 2011 model year under the provisions of Sec.  
600.115-08. If the manufacturer determines that the resulting label 
values from either of these methods are not representative of the fuel 
economy for that model type, they may voluntarily lower these values. 
All 2011 and later model year medium-

[[Page 61552]]

duty passenger vehicles, dedicated alternative-fueled vehicles, and 
dual fuel vehicles when operating on alternative fuel must be labeled 
for fuel economy, using the derived 5-cycle method or, at the 
manufacturer's option, the vehicle-specific 5-cycle method. Fuel 
economy label values for dual fuel vehicles operating on alcohol-based 
or natural gas fuel are calculated separately.
* * * * *
    (2) * * *
    (i) For each model type, determine the derived five-cycle city fuel 
economy using the following equation and coefficients determined by the 
Administrator:
[GRAPHIC] [TIFF OMITTED] TR25NO09.229

Where:

City Intercept = Intercept determined by the Administrator based on 
historic vehicle-specific 5-cycle city fuel economy data.
City Slope = Slope determined by the Administrator based on historic 
vehicle-specific 5-cycle city fuel economy data.
MT FTP FE = the model type FTP-based city fuel economy determined 
under Sec.  600.208-08(b), rounded to the nearest 0.0001 mpg.

    (ii) For each model type, determine the derived five-cycle highway 
fuel economy using the equation below and coefficients determined by 
the Administrator:
[GRAPHIC] [TIFF OMITTED] TR25NO09.230

Where:

Highway Intercept = Intercept determined by the Administrator based 
on historic vehicle-specific 5-cycle highway fuel economy data.
Highway Slope = Slope determined by the Administrator based on 
historic vehicle-specific 5-cycle highway fuel economy data.
MT HFET FE = the model type highway fuel economy determined under 
Sec.  600.208-08(b), rounded to the nearest 0.0001 mpg.
* * * * *
    (3) * * *
    (i) City and Highway label values for dual fuel alcohol-based and 
natural gas vehicles when using the alternate fuel are separately 
determined by the following calculation:
[GRAPHIC] [TIFF OMITTED] TR25NO09.231

Where:

FEalt = The unrounded FTP-based model-type city or HFET-
based model-type highway fuel economy from the alternate fuel, as 
determined in Sec.  600.208(b)(5)(ii).
5-cycle FEgas = The unrounded vehicle-specific or derived 
5-cycle model-type city or highway fuel economy, as determined in 
paragraph (a)(1) or (a)(2) of this section.
FEgas = The unrounded FTP-based city or HFET-based model 
type highway fuel economy from gasoline (or diesel), as determined 
in Sec.  600.208(b)(5)(i).

    The result, rounded to the nearest whole number, is the alternate 
fuel label value for dual fuel vehicles.
* * * * *
    (e) Fuel economy values and other information for advanced 
technology vehicles. (1) The Administrator may prescribe an alternative 
method of determining the city and highway model type fuel economy 
values for general, unique or specific fuel economy labels other than 
those set forth in this Subpart C for advanced technology vehicles 
including, but not limited to battery electric vehicles, fuel cell 
vehicles, plug-in hybrid electric vehicles and vehicles equipped with 
hydrogen internal combustion engines.
    (2) For advanced technology vehicles, the Administrator may 
prescribe special methods for calculating and/or determining 
information other than fuel economy that is required to be displayed on 
fuel economy labels as specified in section 600.307-08(k) of this part. 
For example, the Administrator may prescribe methods to determine the 
city and highway electrical energy consumption values and the all 
electric driving range for battery electric vehicles and plug-in hybrid 
electric vehicles.

Subpart D--[Amended]

0
20. Section 600.307-08 is amended by adding new paragraph (k) to read 
as follows:

Sec.  600.307-08  Fuel economy label format requirements.

* * * * *
    (k) Special label format requirements. The Administrator may 
prescribe special label format and information requirements for 
vehicles which are not specifically described in this section and for 
which sample labels are not provided in Appendix IV of this Part 600. 
These types of vehicles may include, but are not limited to battery 
electric vehicles, fuel cell vehicles, plug-in hybrid electric vehicles 
and vehicles equipped with hydrogen internal combustion engines. The 
format and information requirements for the labels of such vehicles 
will be designed to provide simple, easy to understand, fuel economy 
values in accordance with the way the fuel is expected to be dispensed, 
sold or marketed in the field to the ultimate consumer. The 
Administrator may prescribe special label format and information 
requirements for other information required to be displayed on fuel 
economy labels pursuant to 49 U.S.C. 32908(b)(1)(F). For example, the 
Administrator may prescribe special label format and information 
requirements to display the city and highway electrical energy 
consumption values and the all electric driving range for battery 
electric vehicles and plug-in hybrid electric vehicles.

0
21. Section 600.315-08 is amended as follows:

[[Page 61553]]

0
a. By revising paragraph (a)(2) introductory text.
0
b. By revising paragraph (a)(3)(i).
0
c. By revising paragraphs (b)(1), (b)(2), (b)(3).
0
d. By revising paragraph (c) introductory text and paragraph (c)(1).
0
e. By revising paragraph (e) introductory text.
0
f. By revising paragraph (e)(2)(ii).
0
g. By revising paragraph (g)(1) introductory text and paragraph 
(g)(1)(i).
0
h. By revising paragraph (g)(2) introductory text and paragraph 
(g)(2)(iii).
0
i. By revising paragraph (h)(2) introductory text, (h)(3), and 
(h)(4)(ii).

Sec.  600.315-08  Classes of comparable automobiles.

    (a) * * *
    (2) The Administrator will classify light trucks (nonpassenger 
automobiles) into the following classes: Small pickup trucks, standard 
pickup trucks, vans, minivans, and SUVs. Pickup trucks will be 
separated by car line on the basis of gross vehicle weight rating 
(GVWR). For pickup truck car lines with more than one GVWR, the GVWR of 
the pickup truck car line is the arithmetic average of all distinct 
GVWRs less than or equal to 8,500 pounds available for that car line. 
The Administrator may determine that specific light trucks should be 
most appropriately placed in a different class or in the special 
purpose vehicle class as provided in paragraph (a)(3)(i) and (a)(3)(ii) 
of this section, based on the features and characteristics of the 
specific vehicle, consumer information provided by the manufacturer, 
and other information available to consumers.
* * * * *
    (3)(i) Special purpose vehicles. All automobiles with GVWR less 
than or equal to 8,500 pounds and all medium-duty passenger vehicles 
which possess special features and which the Administrator determines 
are more appropriately classified separately from typical automobiles 
or which do not meet the requirements of paragraphs (a)(1) and (2) of 
this section will be classified as special purpose vehicles. For 
example, the Administrator may determine that advanced technology 
vehicles (such as battery electric vehicles, fuel cell vehicles, plug-
in hybrid electric vehicles and vehicles equipped with hydrogen 
internal combustion engines) should be appropriately classified as a 
type of ``special purpose vehicle.'' The Administrator may determine 
appropriate names for such types of special purpose vehicles, different 
from the name ``special purpose vehicle.''
* * * * *
    (b) Interior volume index--passenger automobiles. (1) The interior 
volume index shall be calculated for each car line which is not a ``two 
seater'' car line, in cubic feet rounded to the nearest 0.1 cubic foot. 
For car lines with more than one body style, the interior volume index 
for the car line is the arithmetic average of the interior volume 
indexes of each body style in the car line.
    (2) For all body styles except station wagons and hatchbacks with 
more than one seat (e.g., with a second or third seat) equipped with 
seatbelts as required by DOT safety regulations, interior volume index 
is the sum, rounded to the nearest 0.1 cubic feet, of the front seat 
volume, the rear seat volume(s), if applicable, and the luggage 
capacity.
    (3) For all station wagons and hatchbacks with more than one seat 
(e.g., with a second or third seat) equipped with seatbelts as required 
by DOT safety regulations, interior volume index is the sum, rounded to 
the nearest 0.1 cubic feet, of the front seat volume, the rear seat 
volume, and the cargo volume index.
    (c) All interior and cargo dimensions are measured in inches to the 
nearest 0.1 inch. All dimensions and volumes shall be determined from 
the base vehicles of each body style in each car line, and do not 
include optional equipment. The dimensions H61, W3, W5, L34, H63, W4, 
W6, L51, H201, L205, L210, L211, H198, W201, and volume V1 are to be 
determined in accordance with the procedures outlined in Motor Vehicle 
Dimensions SAE J1100a (Report of Human Factors Engineering Committee, 
Society of Automotive Engineers, approved September 1973 and last 
revised September 1975), as incorporated by reference as specified in 
Sec.  600.011-93, except as noted herein:
    (1) SAE J1100a(2.3)--Cargo dimensions. All dimensions are measured 
with the front seat positioned the same as for the interior dimensions 
and the second seat, for the station wagons and hatchbacks, in the 
upright position. All head restraints shall be in the stowed position 
and considered part of the seat.
* * * * *
    (e) The rear seat volume is calculated in cubic feet, for vehicles 
with a rear seat equipped with rear seat belts (as required by DOT), by 
dividing 1,728 into the product of three terms listed below and 
rounding the quotient to the nearest 0.001 cubic feet:
* * * * *
    (2) * * *
    (ii) W4--Shoulder room-second, if hip room is not more than 5 
inches less than shoulder room. (In inches, W4 is obtained according to 
paragraph (c) of this section), and
* * * * *
    (g) * * *
    (1) For station wagons the cargo volume index V10 is calculated, in 
cubic feet, by dividing 1,728 into the product of three terms and 
rounding the quotient to the nearest 0.001 cubic feet:
    (i) Average cargo width, which is the arithmetic average of:
    (A) W4--Shoulder room-second (in inches obtained according to 
paragraph (c) of this section); and
    (B) W201--Cargo width-wheelhouse (in inches obtained according to 
paragraph (c) of this section).
* * * * *
    (2) For hatchbacks, the cargo volume index V11 is calculated, in 
cubic feet, by dividing 1,728 into the product of three terms and 
rounding the quotient to the nearest 0.001 cubic foot:
* * * * *
    (iii) H198--Second seatback to load floor height. (In inches 
obtained according to paragraph (c) of this section.)
    (h) * * *
    (2) For all passenger automobiles except station wagons and 
hatchbacks with more than one seat (e.g., with a second or third seat) 
equipped with seat belts as required by DOT safety regulations:
* * * * *
    (3) For station wagons with more than one seat (e.g., with a second 
or third seat) equipped with seat belts as required by DOT safety 
regulations:
    (i) The dimensions H201, L205, and W201 determined in accordance 
with paragraph (c) of this section, and
    (ii) The cargo volume index V10 determined in accordance with 
paragraph (g)(1) of this section.
    (4) * * *
    (ii) The cargo volume index V11 determined in accordance with 
paragraph (g)(2) of this section.
* * * * *

Subpart E--[Amended]

0
22. Section 600.501-93 is amended by revising paragraph (a) to read as 
follows:

Sec.  600.501-93  General applicability.

    (a) The provisions of this subpart are applicable to 1993 and later 
model year passenger automobiles and light trucks, and to the 
manufacturers of passenger automobiles and light trucks as determined 
by the Secretary of Transportation in 49 CFR 531.3 and 49

[[Page 61554]]

CFR 533.3. The provisions of this subpart are applicable to medium-duty 
passenger vehicles manufactured in 2011 model year and later model 
years and to the manufacturers of such vehicles.
* * * * *

0
23. Section 600.502-81 is amended by adding a new paragraph (a)(4) to 
read as follows:

Sec.  600.502-81  Definitions.

    (a) * * *
    (4) Footprint means the area between the wheels of an automobile as 
defined by the Secretary of Transportation at 49 CFR 523.2.
* * * * *

0
24. Section 600.510-08 is amended as follows:
0
a. By revising paragraph (a)(1).
0
b. By removing and reserving paragraph (a)(2).
0
c. By revising paragraph (a)(3).
0
d. By removing and reserving paragraph (a)(4).
0
e. By revising paragraph (b)(2)(i) introductory text.
0
f. By removing and reserving paragraphs (b)(2)(i)(A) and (b)(2)(i)(B).
0
g. By revising paragraph (b)(3)(i) introductory text.
0
h. By removing and reserving paragraphs (b)(3)(i)(A) and (b)(3)(i)(B).
0
i. By revising paragraph (c)(2)(v) introductory text.
0
j. By revising paragraph (c)(2)(vi) introductory text.
0
k. By revising the equation for IW in paragraph (e).
0
l. By revising paragraph (g)(3).
0
m. By revising paragraph (h) introductory text.
0
n. By removing and reserving paragraph (i).

Sec.  600.510-08  Calculation of average fuel economy.

    (a) * * *
    (1) An average fuel economy calculation will be made for the 
category of passenger automobiles as determined by the Secretary of 
Transportation. For example, categories may include, but are not 
limited to domestically manufactured and/or non-domestically 
manufactured passenger automobiles as determined by the Secretary of 
Transportation.
    (2) [Reserved]
    (3) An average fuel economy calculation will be made for the 
category of trucks as determined by the Secretary of Transportation. 
For example, categories may include, but are not limited to 
domestically manufactured trucks, non-domestically manufactured trucks, 
light-duty trucks, medium-duty passenger vehicles, and/or heavy-duty 
trucks as determined by the Secretary of Transportation.
    (4) [Reserved]
    (b) * * *
    (2) * * *
    (i) Separate fuel economy values will be calculated for model types 
and base levels associated with car lines for each category of 
passenger automobiles and trucks as determined by the Secretary of 
Transportation pursuant to paragraphs (a)(1) and (a)(3) of this 
section.
    (A) [Reserved]
    (B) [Reserved]
* * * * *
    (3) * * *
    (i) Separate fuel economy values will be calculated for vehicle 
configurations associated with car lines for each category of passenger 
automobiles and trucks as determined by the Secretary of Transportation 
pursuant to paragraphs (a)(1) and (a)(3) of this section.
    (A) [Reserved]
    (B) [Reserved]
* * * * *
    (c) * * *
    (2) * * *
    (v) For alcohol dual fuel model types, for model years 1993 through 
2019, the harmonic average of the following two terms; the result 
rounded to the nearest 0.1 mpg:
* * * * *
    (vi) For natural gas dual fuel model types, for model years 1993 
through 2019, the harmonic average of the following two terms; the 
result rounded to the nearest 0.1 mpg:
* * * * *
    (e) * * *
* * * * *
    IW = (9.2917 x 10-3 x SF3IWC x 
FE3IWC)-(3.5123 x 10-3 x SF4ETW x 
FE4IWC).
* * * * *
    (g) * * *
    (3) Alcohol dual fuel passenger automobiles and natural gas dual 
fuel passenger automobiles manufactured during model years 1993 through 
2019 must meet the minimum driving range requirements established by 
the Secretary of Transportation (49 CFR part 538) to obtain the CAFE 
credit determined in paragraphs (c)(2)(v) and (vi) of this section.
    (h) For model years 1993 and later, and for each category of 
automobile identified in paragraph (a) of this section, the maximum 
increase in average fuel economy determined in paragraph (c) of this 
section attributable to alcohol dual fuel automobiles and natural gas 
dual fuel automobiles shall be as follows:

------------------------------------------------------------------------
                                                               Maximum
                         Model year                            Increase
                                                                (mpg)
------------------------------------------------------------------------
1993-2014..................................................          1.2
2015.......................................................          1.0
2016.......................................................          0.8
2017.......................................................          0.6
2018.......................................................          0.4
2019.......................................................          0.2
2020 and later.............................................            0
------------------------------------------------------------------------

* * * * *
    (i) [Reserved]

0
25. Section 600.511-80 is amended as follows:
0
a. By revising paragraph (a) introductory text.
0
b. By revising paragraph (b)(5).
0
c. By removing and reserving paragraphs (d) and (e).

Sec.  600.511-80  Determination of domestic production.

    (a) Except with advance approval of the Administrator, an 
automobile shall be considered domestically produced in any model year 
if it is included within a domestically produced car line (car line 
includes station wagons for purposes of this paragraph), unless the 
assembly of such automobile is completed in Canada or Mexico and such 
automobile is not imported into the United States prior to the 
expiration of 30 days following the end of the model year. For purposes 
of this paragraph a car line will be considered domestically produced 
if the following ratio is less than 0.25:
* * * * *
    (b) * * *
    (5) All elections under paragraph (b)(4) of this section shall be 
made in accordance with the procedures established by the Secretary of 
Transportation pursuant to 49 U.S.C. 32904(b)(3)(C).
* * * * *

0
26. Section 600.512-08 is amended by adding new paragraphs (c)(8) and 
(c)(9) to read as follows:

Sec.  600.512-08  Model Year Report.

* * * * *
    (c) * * *
    (8) For 2008-2010 light truck model year reports, the average fuel 
economy standard or the ``required fuel economy level'' pursuant to 49 
CFR Part 533, as applicable. Model year reports for light trucks 
meeting required fuel economy levels pursuant to 49 CFR 533.5(g) and 
(h) shall include information in sufficient detail to verify the 
accuracy of the calculated required fuel economy level. Such 
information is expected to include but is not limited to, production 
information for each unique footprint

[[Page 61555]]

within each model type contained in the model year report and the 
formula used to calculate the required fuel economy level. Model year 
reports for required fuel economy levels shall include a statement that 
the method of measuring vehicle track width, measuring vehicle 
wheelbase and calculating vehicle footprint is accurate and complies 
with applicable Department of Transportation requirements.
    (9) For 2011 and later model year reports, the ``required fuel 
economy level'' pursuant to 49 CFR Parts 531 or 533, as applicable. 
Model year reports shall include information in sufficient detail to 
verify the accuracy of the calculated required fuel economy level, 
including but is not limited to, production information for each unique 
footprint within each model type contained in the model year report and 
the formula used to calculate the required fuel economy level. Model 
year reports shall include a statement that the method of measuring 
vehicle track width, measuring vehicle wheelbase and calculating 
vehicle footprint is accurate and complies with applicable Department 
of Transportation requirements.

[FR Doc. E9-27945 Filed 11-24-09; 8:45 am]

BILLING CODE 6560-50-P