H. R. 6—233
(3) $45,000,000 for fiscal year 2008. 
(4) Such sums as are necessary for each of fiscal years 
2009 and 2010. 
SEC. 743. FUEL CELL SCHOOL BUSES. 
(a) ESTABLISHMENT.—The Secretary shall establish a program 
for entering into cooperative agreements— 
(1) with private sector fuel cell bus developers for the 
development of fuel cell-powered school buses; and 
(2) subsequently, with not less than 2 units of local govern-
ment using natural gas-powered school buses and such private 
sector fuel cell bus developers to demonstrate the use of fuel 
cell-powered school buses. 
(b) COST SHARING.—The non-Federal contribution for activities 
funded under this section shall be not less than— 
(1) 20 percent for fuel infrastructure development activities; 
and 
(2) 50 percent for demonstration activities and for develop-
ment activities not described in paragraph (1). 
(c) REPORTS TO CONGRESS.—Not later than 3 years after the 
date of enactment of this Act, the Secretary shall transmit to 
Congress a report that— 
(1) evaluates the process of converting natural gas infra-
structure to accommodate fuel cell-powered school buses; and 
(2) assesses the results of the development and demonstra-
tion program under this section. 
(d) AUTHORIZATION OF APPROPRIATIONS.—There are authorized 
to be appropriated to the Secretary to carry out this section 
$25,000,000 for the period of fiscal years 2006 through 2009. 
Subtitle D—Miscellaneous 
SEC. 751. RAILROAD EFFICIENCY. 
(a) ESTABLISHMENT.—The Secretary shall (in cooperation with 
the Secretary of Transportation and the Administrator of the 
Environmental Protection Agency) establish a cost-shared, public-
private research partnership involving the Federal Government, 
railroad carriers, locomotive manufacturers and equipment sup-
pliers, and the Association of American Railroads, to develop and 
demonstrate railroad locomotive technologies that increase fuel 
economy, reduce emissions, and lower costs of operation. 
(b) AUTHORIZATION OF APPROPRIATIONS.—There are authorized 
to be appropriated to the Secretary to carry out this section— 
(1) $15,000,000 for fiscal year 2006; 
(2) $20,000,000 for fiscal year 2007; and 
(3) $30,000,000 for fiscal year 2008. 
SEC. 752. MOBILE EMISSION REDUCTIONS TRADING AND CREDITING. 
(a) IN GENERAL.—Not later than 180 days after the date of 
enactment of this Act, the Administrator of the Environmental 
Protection Agency shall submit to Congress a report on the experi-
ence of the Administrator with the trading of mobile source emission 
reduction credits for use by owners and operators of stationary 
source emission sources to meet emission offset requirements within 
a nonattainment area. 
(b) CONTENTS.—The report shall describe—
H. R. 6—234
(1) projects approved by the Administrator that include 
the trading of mobile source emission reduction credits for 
use by stationary sources in complying with offset requirements, 
including a description of— 
(A) project and stationary sources location; 
(B) volumes of emissions offset and traded; 
(C) the sources of mobile emission reduction credits; 
and 
(D) if available, the cost of the credits; 
(2) the significant issues identified by the Administrator 
in consideration and approval of trading in the projects; 
(3) the requirements for monitoring and assessing the air 
quality benefits of any approved project; 
(4) the statutory authority on which the Administrator 
has based approval of the projects; 
(5) an evaluation of how the resolution of issues in approved 
projects could be used in other projects and whether the emis-
sion reduction credits may be considered to be additional in 
relation to other requirements; 
(6) the potential, for attainment purposes, of emission 
reduction credits relating to transit and land use policies; and 
(7) any other issues that the Administrator considers rel-
evant to the trading and generation of mobile source emission 
reduction credits for use by stationary sources or for other 
purposes. 
SEC. 753. AVIATION FUEL CONSERVATION AND EMISSIONS. 
(a) IN GENERAL.—Not later than 60 days after the date of 
enactment of this Act, the Administrator of the Federal Aviation 
Administration and the Administrator of the Environmental Protec-
tion Agency shall jointly initiate a study to identify— 
(1) the impact of aircraft emissions on air quality in non-
attainment areas; 
(2) ways to promote fuel conservation measures for aviation 
to enhance fuel efficiency and reduce emissions; and 
(3) opportunities to reduce air traffic inefficiencies that 
increase fuel burn and emissions. 
(b) FOCUS.—The study under subsection (a) shall focus on how 
air traffic management inefficiencies, such as aircraft idling at 
airports, result in unnecessary fuel burn and air emissions. 
(c) REPORT.—Not later than 1 year after the date of the initi-
ation of the study under subsection (a), the Administrator of the 
Federal Aviation Administration and the Administrator of the 
Environmental Protection Agency shall jointly submit to the Com-
mittee on Energy and Commerce and the Committee on Transpor-
tation and Infrastructure of the House of Representatives and the 
Committee on Environment and Public Works and the Committee 
on Commerce, Science, and Transportation of the Senate a report 
that— 
(1) describes the results of the study; and 
(2) includes any recommendations on ways in which 
unnecessary fuel use and emissions affecting air quality may 
be reduced— 
(A) without adversely affecting safety and security and 
increasing individual aircraft noise; and 
(B) while taking into account all aircraft emissions 
and the impact of those emissions on the human health.
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(d) RISK ASSESSMENTS.—Any assessment of risk to human 
health and the environment prepared by the Administrator of the 
Federal Aviation Administration or the Administrator of the 
Environmental Protection Agency to support the report in this 
section shall be based on sound and objective scientific practices, 
shall consider the best available science, and shall present the 
weight of the scientific evidence concerning such risks. 
SEC. 754. DIESEL FUELED VEHICLES. 
(a) DEFINITION OF TIER 2 EMISSION STANDARDS.—In this sec-
tion, the term ‘‘tier 2 emission standards’’ means the motor vehicle 
emission standards that apply to passenger cars, light trucks, and 
larger passenger vehicles manufactured after the 2003 model year, 
as issued on February 10, 2000, by the Administrator of the 
Environmental Protection Agency under sections 202 and 211 of 
the Clean Air Act (42 U.S.C. 7521, 7545). 
(b) 
DIESEL
COMBUSTION
AND
AFTER-TREATMENT
TECH-
NOLOGIES.—The Secretary shall accelerate efforts to improve diesel 
combustion and after-treatment technologies for use in diesel fueled 
motor vehicles. 
(c) GOALS.—The Secretary shall carry out subsection (b) with 
a view toward achieving the following goals: 
(1) Developing and demonstrating diesel technologies that, 
not later than 2010, meet the following standards: 
(A) Tier 2 emission standards. 
(B) The heavy-duty emissions standards of 2007 that 
are applicable to heavy-duty vehicles under regulations 
issued by the Administrator of the Environmental Protec-
tion Agency as of the date of enactment of this Act. 
(2) Developing the next generation of low-emission, high 
efficiency diesel engine technologies, including homogeneous 
charge compression ignition technology. 
SEC. 755. CONSERVE BY BICYCLING PROGRAM. 
(a) DEFINITIONS.—In this section: 
(1) PROGRAM.—The term ‘‘program’’ means the Conserve 
by Bicycling Program established by subsection (b). 
(2) SECRETARY.—The term ‘‘Secretary’’ means the Secretary 
of Transportation. 
(b) ESTABLISHMENT.—There is established within the Depart-
ment of Transportation a program to be known as the ‘‘Conserve 
by Bicycling Program’’. 
(c) PROJECTS.— 
(1) IN GENERAL.—In carrying out the program, the Sec-
retary shall establish not more than 10 pilot projects that 
are— 
(A) dispersed geographically throughout the United 
States; and 
(B) designed to conserve energy resources by encour-
aging the use of bicycles in place of motor vehicles. 
(2) REQUIREMENTS.—A pilot project described in paragraph 
(1) shall— 
(A) use education and marketing to convert motor 
vehicle trips to bicycle trips; 
(B) document project results and energy savings (in 
estimated units of energy conserved); 
(C) facilitate partnerships among interested parties in 
at least 2 of the fields of—