Thank you for your assistance in helping clean up the air. Your confidentiality is assured. The Smoking Vehicle Program was adopted as part of the Clean Air Program. Motor vehicle emissions are a major source of air pollution and the brown cloud in the Phoenix metropolitan area. The Smoking Vehicle Program is one of several programs in place in Phoenix, and other cities across the country, to improve air quality by increasing understanding of the relationship between vehicle maintenance and pollution.
Air quality affects health, tourism, livelihood, and the environment.
The Smoking Vehicle Program applies only to vehicles with Arizona Plates. Please report the license plate number to the operator. Therefore, a law enforcement officer may cite drivers of such vehicles. Voluntary efforts in correcting the problem are critical to reducing air pollution. If your vehicle was reported on the Environmental Response Line as allegedly observed emitting excessive smoke, we ask you to check it, and if there is a problem , make any necessary repairs to reduce excessive smoke emissions.