Transportation and Air Quality
- I have invented a device/fuel additive for cars that will increase fuel economy and reduce emissions. Will EPA test it and certify it for me?
- Can EPA perform an emissions test for me or certify an independent laboratory for testing emissions?
What's New in OTAQ
OTAQ Recent Additions
- April 8: EPA Summit focuses on improving environmental performance at ports.
- April 2: EPA seeks small entity participation on upcoming Heavy-Duty National Program.
- March 3: EPA sets cleaner, more efficient vehicle and fuel standards with Tier 3.
OTAQ Press Releases
- April 8, 2014: EPA to Work with Ports to Improve Environmental Performance / Clean diesel grants and new ports initiative will advance sustainable technologies
- April 2, 2014: EPA Seeks Small Entity Participation on Upcoming Medium- and Heavy-Duty Greenhouse Gas Emissions Standards
- March 19, 2014: EPA Celebrates 10 Years of SmartWay Partnerships / Voluntary program saves companies billions in fuel costs while cutting pollution
OTAQ Federal Register Notices
- March 31, 2014: Approval of States' Requests To Relax the Federal Reid Vapor Pressure Volatility Standard in Florida, and the Raleigh-Durham-Chapel Hill and Greensboro/Winston-Salem/High Point Areas in North Carolina
- March 21, 2014: Meeting of the Mobile Sources Technical Review Subcommittee
EPA's Office of Transportation and Air Quality protects public health and the environment by regulating air pollution from motor vehicles, engines, and the fuels used to operate them, and by encouraging travel choices that minimize emissions. These "mobile sources" include cars and light trucks, heavy trucks and buses, nonroad engines, equipment, and vehicles. For more information see:
- About the Office of Transportation and Air Quality (OTAQ)
- About the National Vehicle and Fuel Emissions Laboratory (NVFEL)
OTAQ's top sites
OTAQ's programs and website topics (A detailed list of programs and topics is on our site map.)
Overview:Pollutants & Programs
Information on how much air pollution, air toxics, and greenhouse gases are emitted by mobile sources, the programs OTAQ has undertaken to control these emissions, and the impact of those programs on air quality and climate change.
On-Road Vehicles & Engines
Information about fuel economy, emission standards and regulations, emission recall, certification and compliance, inspection and maintenance, diesel retrofit, evaluating the benefits of inventions designed to reduce emissions, and importing vehicles and engines.
Nonroad Engines, Equipment
Information about nonroad engines, equipment and vehicles: emission standards and regulations, certification and compliance, and diesel retrofit programs.
- Diesel Boats & Ships
- Gasoline Boats & Personal Watercraft
- Nonroad Diesel Equipment
- Forklifts, Generators & Compressors
- Lawn & Garden
- Snowmobiles, Dirt Bikes, & ATVs
Fuels & Fuel Additives
State & Local Transportation
Modeling, Testing, & Research
Information on modeling and inventories for estimating emissions from highway vehicles, nonroad sources, and fuels; testing and measuring emissions; research into clean automotive technologies; and emission factors research.