Document ID: NHTSA-2014-0132-0251
Agency: nhtsa
Document Type: Rule
Title: Greenhouse Gas Emissions and Fuel Efficiency Standards: Medium- and Heavy-Duty Engines and Vehicles; Phase 2
Posted Date: 2017-06-30T04:00Z

[Federal Register Volume 82, Number 125 (Friday, June 30, 2017)]
[Rules and Regulations]
[Pages 29761-29762]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: C1-2016-21203]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 9, 22, 85, 86, 600, 1033, 1036, 1037, 1039, 1042, 
1043, 1065, 1066, and 1068

DEPARTMENT OF TRANSPORTATION

National Highway Traffic Safety Administration

49 CFR Parts 523, 534, 535, and 538

[EPA-HQ-OAR-2014-0827; NHTSA-2014-0132; FRL-9950-25-OAR]
RIN 2060-AS16; RIN 2127-AL52

Greenhouse Gas Emissions and Fuel Efficiency Standards for 
Medium- and Heavy-Duty Engines and Vehicles--Phase 2

Correction

0
In rule document 2016-21203, appearing on pages 73478-74274, in the 
issue of Tuesday, October 25, 2016, make the following corrections:

Sec.  1036.805  Symbols, abbreviations, and acronyms. [Corrected]

0
1. On page 74044, in paragraph (b), the table should read as follows:

----------------------------------------------------------------------------------------------------------------
                                                                                            Unit in terms of SI
            Symbol                   Quantity             Unit            Unit symbol           base units
----------------------------------------------------------------------------------------------------------------
a.............................  atomic hydrogen-   mole per mole....  mol/mol...........  1.
                                 to-carbon ratio.
b.............................  atomic oxygen-to-  mole per mole....  mol/mol...........  1.
                                 carbon ratio.
CdA...........................  drag area........  meter squared....  m\2\..............  m\2\.
Crr...........................  coefficient of     kilogram per       kg/tonne..........  10-\3\.
                                 rolling            metric ton.
                                 resistance.
D.............................  distance.........  miles or meters..  mi or m...........  m.
e.............................  mass weighted      grams/ton-mile...  g/ton-mi..........  g/kg-km.
                                 emission result.
Eff...........................  efficiency.
Em............................  mass-specific net  megajoules/        MJ/kg.............  m\2\[middot]s-\2\.
                                 energy content.    kilogram.
fn............................  angular speed      revolutions per    r/min.............  [pi][middot]30[middot]
                                 (shaft).           minute.                                s-\1\.
i.............................  indexing
                                 variable.
ka............................  drive axle ratio.
ktopgear......................  highest available
                                 transmission
                                 gear.
m.............................  mass.............  pound mass or      lbm or kg.........  kg.
                                                    kilogram.
M.............................  molar mass.......  gram per mole....  g/mol.............  10-
                                                                                           \3\[middot]kg[middot]
                                                                                           mol-\1\.
M.............................  vehicle mass.....  kilogram.........  kg................  kg.
Mrotating.....................  inertial mass of   kilogram.........  kg................  kg.
                                 rotating
                                 components.
N.............................  total number in a
                                 series.
P.............................  power............  kilowatt.........  kW................  10\3\[middot]m\2\[midd
                                                                                           ot]kg[middot]s-\3\.
T.............................  torque (moment of  newton meter.....  N[middot]m........  m\2\[middot]kg[middot]
                                 force).                                                   s-\2\.
t.............................  time.............  second...........  s.................  s.
[Delta]t......................  time interval,     second...........  s.................  s.
                                 period, 1/
                                 frequency.
UF............................  utility factor.
v.............................  speed............  miles per hour or  mi/hr or m/s......  m[middot]s-\1\.
                                                    meters per
                                                    second.

[[Page 29762]]

 
W.............................  work.............  kilowatt-hour....  kW[middot]hr......  3.6[middot]m\2\[middot
                                                                                           ]kg[middot]s-\1\.
wC............................  carbon mass        gram/gram........  g/g...............  1.
                                 fraction.
wCH4N2O.......................  urea mass          gram/gram........  g/g...............  1.
                                 fraction.
x.............................  amount of          mole per mole....  mol/mol...........  1.
                                 substance mole
                                 fraction.
xb............................  brake energy
                                 fraction.
xbl...........................  brake energy
                                 limit.
----------------------------------------------------------------------------------------------------------------

Sec.  1037.550  Powertrain testing. [Corrected]

0
2. On page 74097, in the third column, TABLE 1 OF Sec.  1037.550--
STATISTICAL CRITERIA FOR VALIDATING DUTY CYCLES should read as follows:

  Table 1 of Sec.   1037.550--Statistical Criteria for Validating Duty
                                 Cycles
------------------------------------------------------------------------
               Parameter \1\                        Speed control
------------------------------------------------------------------------
Slope, a1.................................  0.990 <= a1 <= 1.010.
Absolute value of intercept,                <=2.0% of maximum test
 [bond]a0[bond].                             speed.
Standard error of estimate, SEE...........  <=2.0% of maximum test
                                             speed.
Coefficient of determination, r\2\........  >=0.990.
------------------------------------------------------------------------
\1\ Determine values for specified parameters as described in 40 CFR
  1065.514(e) by comparing measured and reference values for fnref,dyno.

[FR Doc. C1-2016-21203 Filed 6-29-17; 8:45 am]
BILLING CODE 1301-00-D