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Transportation Air Quality Facts and Figures January 2006

Average Emissions of a Typical Car on the Road in 2002

Parking All Day 0.115
Hot Soak 0.144
Running Loss 0.227
Running Exhaust 0.268
Cold Start 0.263
Running Exhaust 8.59
Cold Start 3.01
Running Exhaust 0.693
Cold Start 0.168

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Updated: 7/6/2011
HEP Home Planning Environment Real Estate
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000