CMAQ Program

Congestion Mitigation and Air Quality Improvement Program

The purpose of the CMAQ program is to support transportation projects or programs that will improve air quality and relieve congestion in areas that do not meet National Ambient Air Quality Standards. Reducing pollution and other adverse environmental effects of transportation projects and transportation system inefficiency have been longstanding objectives of the Department of Transportation. 

CMAQ funds may be used to establish new or expanded transportation projects or programs that reduce emissions, including capital investments in transportation infrastructure, congestion relief efforts and diesel engine retrofits. Other CMAQ projects include operating assistance for new transit services, bicycle/pedestrian facilities and programs, travel demand management strategies and traffic flow improvement programs that reduce emissions.

As of August 2017, the CMAQ program is suspended and no new project applications will be accepted. Existing projects will be completed.