Street racing is an illegal form of motor racing that occurs on a public road. Racing in the streets is considered an ancient hazard, as horse racing occurred on streets for centuries, and street racing in automobiles is likely as old as the automobile itself. Street racing is popular and hazardous, with deaths of bystanders, passengers, and drivers occurring yearly.
Street racing can either be spontaneous or well-planned and coordinated. Well-coordinated races are planned and often have people communicating via two-way radios or citizens' band radio, and using police scanners and GPS units to mark locations where local police are more prevalent. Opponents of street racing claim street races have a lack of safety relative to sanctioned racing events, as well as safety risks arising from traffic collisions resulting in injuries and deaths, legal reprucusions and harm to bystanders. Street racing is distinct from the legal and governed sport of drag racing.