Governing Law and Regulations
North Carolina Department of Environmental Quality (DEQ) Division of Air Quality
North Carolina Department of Transportation (NCDOT) Division of Motor Vehicles (DMV)
See national section for basic information and federal regulations.
Comparison: State v. Federal
• Rules. North Carolina operates a decentralized vehicle inspection and maintenance (I/M) program in various areas of the state, with newer model vehicles required to meet federal on-board diagnostic (OBD) standards. The state is requiring heavy-duty diesel vehicles to meet the standards established by the California Air Resources Board and adhere to idling restrictions.
The Department of Environmental Quality (DEQ) has provisions to implement an oxygenated gasoline program should it be necessary in order to attain or maintain compliance with the carbon monoxide National Ambient Air Quality Standards (NAAQS).
• Administration and enforcement. DEQ's Division of Air Quality is the primary agency responsible for the administration ...