How the Utah Smoking Vehicle Hotline Works

Complaints require date, time, location observed and a description of the vehicle. Complaints get forwarded to the local health department where the vehicle is registered. The local health department will track the complaints and mail a letter to the vehicle owner.

The letters state the vehicle was reported as smoking. Letters state the vehicle owner should verify if the vehicle is smoking and to get the vehicle repaired if necessary.

Utah law 41-6a-1626 (2) states:
  1. Except while the engine is being warmed to the recommended operating temperature, the engine and power mechanism of a gasoline-powered motor vehicle may not emit visible contaminants during operation.
    1. As used in this Subsection (2)(b), "heavy tow" means a tow that exceeds the vehicle's maximum tow weight.
    2. A diesel engine manufactured on or after January 1, 2008, may not emit visible contaminants during operation:
      1. except while the engine is being warmed to the recommended operating temperature or under a heavy tow; or
      2. unless the diesel engine is in a vehicle with a manufacturer's gross vehicle weight rating in excess of 26,000 pounds.
    3. A diesel engine manufactured before January 1, 2008, may not emit visible contaminants of a shade or density that obscures a contrasting background by more than 20%, for more than five consecutive seconds:
      1. except while the engine is being warmed to the recommended operating temperature or under a heavy tow; or
      2. unless the diesel engine is in a vehicle with a manufacturer's gross vehicle weight rating in excess of 26,000 pounds.