The license number, date, time, and approximate location of the vehicle sighting are reported. If possible, it is also helpful to know the make and model of the vehicle. The DNR encourages citizens to ensure safe driving habits by making reports only when it is safe and convenient. Once reported, the vehicle owner is sent informative materials to assist and urge them to make an educated decision about the benefits of vehicle care and to voluntarily take action. Many people choose to make repairs once they learn of the performance, environmental, and health benefits.
Some repairs are simple, such as replacing a clogged air filter.
Other repairs may require professional service. Performance Benefits Excessive exhaust is a clue something is not working properly. Other benefits include better engine performance, higher resale value, and longer engine life. Action can prevent more costly, future repairs. Much of this pollution comes from a small population of poorly maintained vehicles the easiest ones to spot have Smoking Tailpipes.