SECTION 1. REDUCTION OF ENGINE IDLING OF HEAVY-DUTY VEHICLES.

    (a) Definitions.--In this section:
            (1) Administrator.--The term ``Administrator'' means the 
        Administrator of the Environmental Protection Agency.
            (2) Advanced truck stop electrification system.--The term 
        ``advanced truck stop electrification system'' means a 
        stationary system that delivers heat, air conditioning, 
        electricity, and/or communications, and is capable of providing 
        verifiable and auditable evidence of use of those services, to 
        a heavy-duty vehicle and any occupants of the heavy-duty 
        vehicle with or without relying on components mounted onboard 
        the heavy-duty vehicle for delivery of those services.
            (3) Auxiliary power unit.--The term ``auxiliary power 
        unit'' means an integrated system that--
                    (A) provides heat, air conditioning, engine 
                warming, or electricity to components on a heavy-duty 
                vehicle as if the main drive engine of the heavy-duty 
                vehicle were running; and
                    (B) is certified by the Administrator under part 89 
                of title 40, Code of Federal Regulations (or any 
                successor regulation), as meeting applicable emission 
                standards.
            (4) Heavy-duty vehicle.--The term ``heavy-duty vehicle'' 
        means a vehicle that--
                    (A) has a gross vehicle weight rating greater than 
                8,500 pounds; and
                    (B) is powered by a diesel engine.
            (5) Idle reduction technology.--The term ``idle reduction 
        technology'' means an advanced truck stop electrification 
        system, auxiliary power unit, or other device or system of 
        devices that--
                    (A) is used to reduce long-duration idling of a 
                heavy-duty vehicle; and
                    (B) allows for the main drive engine or auxiliary 
                refrigeration engine of a heavy-duty vehicle to be shut 
                down.
            (6) Energy conservation technology.--the term ``energy 
        conservation technology'' means any device, system of devices, 
        or equipment that improves the fuel economy of a heavy-duty 
        vehicle.
            (7) Long-duration idling.--
                    (A) In general.--The term ``long-duration idling'' 
                means the operation of a main drive engine or auxiliary 
                refrigeration engine of a heavy-duty vehicle, for a 
                period greater than 15 consecutive minutes, at a time 
                at which the main drive engine is not engaged in gear.
                    (B) Exclusions.--The term ``long-duration idling'' 
                does not include the operation of a main drive engine 
                or auxiliary refrigeration engine of a heavy-duty 
                vehicle during a routine stoppage associated with 
                traffic movement or congestion.
    (b) Idle Reduction Technology Benefits, Programs, and Studies.--
            (1) In general.--Not later than 90 days after the date of 
        enactment of this Act, the Administrator shall--
                    (A)(i) commence a review of the mobile source air 
                emission models of the Environmental Protection Agency 
                used under the Clean Air Act (42 U.S.C. 7401 et seq.) 
                to determine whether the models accurately reflect the 
                emissions resulting from long-duration idling of heavy-
                duty vehicles and other vehicles and engines; and
                    (ii) update those models as the Administrator 
                determines to be appropriate; and
                    (B)(i) commence a review of the emission reductions 
                achieved by the use of idle reduction technology; and
                    (ii) complete such revisions of the regulations and 
                guidance of the Environmental Protection Agency as the 
                Administrator determines to be appropriate.
            (2) Deadline for completion.--Not later than 180 days after 
        the date of enactment of this Act, the Administrator shall--
                    (A) complete the reviews under subparagraphs (A)(i) 
                and (B)(i) of paragraph (1); and
                    (B) prepare and make publicly available 1 or more 
                reports on the results of the reviews.
            (3) Discretionary inclusions.--The reviews under 
        subparagraphs (A)(i) and (B)(i) of paragraph (1) and the 
        reports under paragraph (2)(B) may address the potential fuel 
        savings resulting from use of idle reduction technology.
            (4) Idle reduction and energy conservation deployment 
        program.--
                    (A) Establishment.--
                            (i) In general.--Not later than 90 days 
                        after the date of enactment of this Act, the 
                        Administrator, in consultation with the 
                        Secretary of Transportation shall, through the 
                        Environmental Protection Agency's SmartWay 
                        Transport Partnership, establish a program to 
                        support deployment of idle reduction and energy 
                        conservation technologies.
                            (ii) Priority.--The Administrator shall 
                        give priority to the deployment of idle 
                        reduction and energy conservation technologies 
                        based on the costs and beneficial effects on 
                        air quality and ability to lessen the emission 
                        of criteria air pollutants.
                    (B) Funding.--
                            (i) Authorization of appropriations.--There 
                        are authorized to be appropriated to the 
                        Administrator to carry out subparagraph (A) 
                        $19,500,000 for fiscal year 2006, $30,000,000 
                        for fiscal year 2007, and $45,000,000 for 
                        fiscal year 2008.
                            (ii) Cost sharing.--Subject to clause 
                        (iii), the Administrator shall require at least 
                        50 percent of the costs directly and 
                        specifically related to any project under this 
                        section to be provided from non-Federal 
                        sources.
                            (iii) Necessary and appropriate 
                        reductions.--The Administrator may reduce the 
                        non-Federal requirement under clause (ii) if 
                        the Administrator determines that the reduction 
                        is necessary and appropriate to meet the 
                        objectives of this section.
            (5) Idling location study.--
                    (A) In general.--Not later than 90 days after the 
                date of enactment of this Act, the Administrator, in 
                consultation with the Secretary of Transportation, 
                shall commence a study to analyze all locations at 
                which heavy-duty vehicles stop for long-duration 
                idling, including--
                            (i) truck stops;
                            (ii) rest areas;
                            (iii) border crossings;
                            (iv) ports;
                            (v) transfer facilities; and
                            (vi) private terminals.
                    (B) Deadline for completion.--Not later than 180 
                days after the date of enactment of this Act, the 
                Administrator shall--
                            (i) complete the study under subparagraph 
                        (A); and
                            (ii) prepare and make publicly available 1 
                        or more reports of the results of the study.
    (c) Vehicle Weight Exemption.--Section 127(a) of title 23, United 
States Code, is amended--
            (1) by designating the first through eleventh sentences as 
        paragraphs (1) through (11), respectively; and
            (2) by adding at the end the following:
            ``(12) Heavy duty vehicles.--
                    ``(A) In general.--Subject to subparagraphs (B) and 
                (C), in order to promote reduction of fuel use and 
                emissions because of engine idling, the maximum gross 
                vehicle weight limit and the axle weight limit for any 
                heavy-duty vehicle equipped with an idle reduction 
                technology shall be increased by a quantity necessary 
                to compensate for the additional weight of the idle 
                reduction system.
                    ``(B) Maximum weight increase.--The weight increase 
                under subparagraph (A) shall be not greater than 400 
                pounds.
                    ``(C) Proof.--On request by a regulatory agency or 
                law enforcement agency, the vehicle operator shall 
                provide proof (through demonstration or certification) 
                that--
                            ``(i) the idle reduction technology is 
                        fully functional at all times; and
                            ``(ii) the 400-pound gross weight increase 
                        is not used for any purpose other than the use 
                        of idle reduction technology described in 
                        subparagraph (A).''.
    (d) Report.--Not later than 60 days after the date on which funds 
are initially awarded under this section, and on an annual basis 
thereafter, the Administrator shall submit to Congress a report 
containing--
            (1) an identification of the grant recipients, a 
        description of the projects to be funded and the amount of 
        funding provided; and
            (2) an identification of all other applicants that 
        submitted applications under the program.
Directs the Administrator of the Environmental Protection Agency (EPA) to: (1) review and update mobile source air emission models to determine whether they accurately reflect the emissions resulting from long-duration idling of heavy-duty vehicles and other vehicles and engines; (2) review emission reductions achieved by the use of idle reduction technology; and (3) complete such revisions of EPA regulations and guidance as the Administrator determines to be appropriate.

Instructs the Administrator to establish a program to support deployment of idle reduction and energy conservation technologies, giving priority to deployment based on the costs and beneficial effects on air quality and ability to lessen the emission of criteria air pollutants.

Directs the Administrator to commence a study to analyze all locations at which heavy-duty vehicles stop for long-duration idling.

States that in order to promote reduction of fuel use and emissions because of engine idling, the maximum gross vehicle weight limit and the axle weight limit for any heavy-duty vehicle equipped with an idle reduction technology shall be increased by a quantity necessary to compensate for the additional weight of the idle reduction system.
To establish a program to support deployment of idle reduction and energy conservation technologies for heavy-duty vehicles, and for other purposes.