Mobile Sources

Mobile Sources are one of the largest sources of air pollution in Maine. Mobile sources include light duty cars and trucks, medium duty vehicles, heavy duty vehicles and any number of off-road vehicles such as snowmobiles and ATV’s.

Vehicle emissions are the largest in-state source of ozone pollution in Maine. Vehicle emissions of pollutants can cause dangerous levels of particulate matter (soot) and airborne toxic chemicals. These chemicals if left unchecked can cause serious health issues especially in sensitive groups. Improperly maintained vehicles and careless driving habits can cost the Maine consumer thousands of dollars a year in fuel and vehicle repairs. Click on the programs below for more information on emission reduction and money saving strategies.

Ethanol This site provides information on fuel containing ethanol.  Included are fact sheets for owners and operators of gasoline storage tanks, retail station owners and operators, and some links to other sites with information on Ethanol.

Diesel Testing This site provides information on the States' On-Road Heavy Duty Diesel Testing Program which is operated in cooperation with the Maine State Police.

Enhanced Vehicle Inspection and Maintenance This site covers the emissions portion of the Enhanced Safety Inspection Program for Cumberland County. It includes On-Board Diagnostics (OBD) inspection.