Utah State Law prohibits a vehicle from emitting excess visible contaminants. If you see such a vehicle being driven in Utah County, please note down the following : date and time, vehicle license plate number, vehicle make, vehicle description and the location. You can report a smoking vehicle by calling 801-851-7608 or using the form below. Visual documentation of a violation is very beneficial to us. If you have an image or video of an event, please email it to marka@utahcounty.gov. Please include information about the time and place the image or video was taken in your email.