Shock legendary driving safety film with numerous scenes of mutilated cars and injured / dead and a voice devoid of compassion.
Produced in cooperation with the Highway Patrol, Ohio State and were shown to millions of young drivers over 40 years.
Signal 30 is just one of many driver education films produced by Highway Safety Films, shot in real scenes of car accidents and consists largely of color close-ups of mangled accident victims.
Other titles in the series includes Carrier or murderer, Highways of Agony, death and tragedy machined wheels. There were imitators, Death on the road is probably the most (in) famous.