Does your business or school have problems with people parking their vehicles illegally? Our parking violation warning stickers are the perfect tool for deterring this type of behavior. When an illegally parked car has been identified, just peel off the backing and place one of these warning stickers on the vehicle window. The returning driver will find that his vehicle has been spotted, his plate # recorded and could be potentially towed the next time they try to park in this spot. It serves as an excellent warning and saves the driver and yourself the hassle of dealing with expensive towing companies.