Laws & Regulations
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Overview of the SmartWay Verification Process for Aerodynamic Devices
The SmartWay Verification Program evaluates the ability of trailer devices to reduce drag and improve fuel economy for Class 8 tractor-trailers.
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Requirements for SmartWay Verification of Aerodynamic Devices
Before applying for SmartWay verification of your aerodynamic device, there are some important considerations and requirements to review.
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Device Information for SmartWay Verification of Aerodynamic Devices
The application process is the second part in the four-step process for SmartWay verification of aerodynamic devices.
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Testing for SmartWay Verification of Aerodynamic Devices
The testing process is the third part in the four-step process for SmartWay verification of aerodynamic devices.
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Evaluation for SmartWay Verification of Aerodynamic Devices
The evaluation process is the fourth and final part of the SmartWay verification process for aerodynamic devices.
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Overview of the SmartWay Verification Process for Idling Reduction Technologies (IRTs) for Trucks
EPA's SmartWay Verification Program evaluates the ability of IRTs to decrease main engine idling in Class 8 long haul tractor trailers in order to save fuel and reduce emissions.
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Testing for SmartWay Verification of Idling Reduction Technologies (IRTs) for Trucks
The testing process is the third part in the four-step process for SmartWay verification of Idle Reduction Technologies (IRTs) for Trucks.
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Overview of the Verification Process for Clean Diesel Technology
The verification process for Clean Diesel technology evaluates the performance and durability of specific emission control devices submitted by manufacturers.
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Compliance Reporting for Portable Fuel Containers
Steps for compliance reporting with EPA for portable fuel containers.
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Transition Program for Equipment Manufacturers (TPEM)
In order to provide flexibility for small equipment manufacturers that must comply with new regulations, EPA created the Transition Program for Equipment Manufacturers, better known as “TPEM” or “flexibility program.”
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Regulations for Emissions from Commercial Trucks and Buses (Heavy-duty)
This page provides links to regulations for controlling greenhouse gas (GHG) emissions, smog, soot and other air pollution from commercial trucks and buses.
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Proposed Rule and Related Materials for Control of Air Pollution From Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards
Includes links to Federal Register notice, draft regulatory analysis, technical support documents and final rule.
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Light-duty Models for Greenhouse Gas (GHG) Emissions
This page links to models and modeling systems related to GHG emissions.
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Regulations for Emissions from Heavy Equipment
This page provides links to regulations for controlling emissions from heavy equipment.
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Regulations for Emissions from Marine Vessels
This page provides links to regulations for controlling emissions from marine vessels.
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Certification and Compliance Testing at the National Vehicle and Fuel Emissions Laboratory (NVFEL)
This page provides links to vehicle and engines' certification and testing resources.
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General Information for Transportation and Conformity
Transportation conformity is required by the Clean Air Act section 176(c) (42 U.S.C. 7506(c)) to ensure that federal funding and approval are given to highway and transit projects that are consistent with SIP.
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State Implementation Plans (SIP): Submissions that EPA has Found Adequate or Inadequate
EPA/OTAQ’s State and Local Transportation Resources are for air quality and transportation government and community leaders. Information on state implementation plans (SIPs) that EPA has found either adequate or inadequate is provided here.
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Adequacy Review of State Implementation Plan (SIP) Submissions for Conformity
This page is for state and local air quality regulators and transportation planners that offers guidance on how to reduce air pollution from cars, diesel trucks, city and school buses, construction equipme