nctcog logo
transportation label



Air Quality Programs

trafficThe North Central Texas area has been designated nonattainment for the pollutant ozone under the National Ambient Air Quality Standard (NAAQS).  Therefore, the North Central Texas Council of Governments (NCTCOG) Regional Transportation Council (RTC) has developed a broad range of air quality programs that seek to reduce emissions of nitrogen oxides (NOx), which lead to ground-level ozone formation. Great strides have already been made in reducing ozone concentrations, but much work remains to be done.

NCTCOG’s air quality strategies seek to reduce emissions in a variety of ways, from energy and fuel efficiency to advancing clean technologies to encouraging changes in daily behavior.  Such strategies are being implemented throughout the region to reduce emissions from different types of sources; however, most of the programs implemented through NCTCOG target mobile source emissions due to the fact that transportation-related activities account for nearly one-half of all ozone-causing pollution in North Central Texas.   

NCTCOG strives to be at the forefront of air quality planning and is constantly reviewing potential new programs and policies.  The links below outline many of the programs and strategies currently in place.   If you have any ideas or suggestions, please contact Chris Klaus at with your comments.

General Programs


Heavy-Duty Vehicle and Equipment Programs



Light-Duty Vehicle Programs


Inspection and Maintenance and High-Emitting Vehicle Programs



Other Resources



5/2/2018   %Trans

Find Us on Facebook       Follow Us on Twitter      Tubin with the COG Trans      Grammin with CogTrans
 North Central Texas Council of Governments | 616 Six Flags Drive P.O. Box 5888 Arlington, TX 76005-5888
 Main Operator: (817) 640-3300 | Fax: (817) 640-7806