Vehicle Repair & Fleet Maintenance Industries

Motor vehicles cause one-third of Maryland's ozone air pollution. Repairs made to vehicles as a result of VEIP testing help to clear the air. Thanks - we couldn't do it without you!


VEIP program-generated documents which offer tips and advice on the repair of vehicle emission control systems, as well as other useful repair and service advice.


CERF, MCET & FIS Information

Information and applications for the Master Certified Emissions Technician, Certified Emissions Repair Facility and Fleet Inspection Station programs.

VEIP Information

Technician Training

Descriptions of training courses offered by the Department as well as links to on-line and other training opportunities.

Reference Documents

Contains documents technicians can use to help repair vehicles and answer customer questions. Documents referenced in the RepairCare publications can also be found in this section.

Links to Repair and Auto Service Organizations and Newsletters

For more information on certification programs for the repair industry and fleet operators, please contact the Mobile Sources Control Program at (410) 537-3270 or email​


If we do our share, we can breathe cleaner air.