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Greenhouse Gases (GHG)

Greenhouse gases are gases in an atmosphere that absorb and emit radiation within the thermal infrared range. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth’s surface would be on average about 15°C (59°F) colder than at...

FTA

Acronym for Federal Transit Authority. As authorized by the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users of 2005 (SAFETEA-LU), the FTA supports locally planned and operated public mass transit systems throughout the United...

Envirotest

Envirotest Systems Corp., a subsidiary of Environmental Systems Products, Inc.     (ESP), operates the Air Care Colorado emissions testing centers under contract to     the State of Colorado.

Environmental Protection Agency (EPA)

EPA leads the nation’s environmental science, research, education and assessment efforts. The mission of the Environmental Protection Agency is to protect human health and the environment. Since 1970, EPA has been working for a cleaner, healthier environment for...

FHWA

Acronym for Federal Highway Administration.  This federal agency carries out the Federal highway programs in partnership with the State and local agencies to meet the Nation’s transportation needs. FHWA adds value to the delivery of the Federal highway...