Warning signal in action - 3 drums rotate with Accident, Fog and Ice marked on them.
Documentation on file from Associated Electrical Industries Ltd entitled 'Safer high-speed motoring - new warning system developed by AEI-GRS'.
MS. Renault Dauphine car pulls to a halt at side of road. Driver gets out and runs to injured man lying by the side of smashed car. MS. Man runs away from scene of accident. MS. Warning sign with telephone at side where man reports accident. VS. In main control room, a man throws a switch to set the signal in motion. VS. Warning signal in action. Three large drums are mounted on a stand and whatever type of road hazard is up ahead one of the three drums rotates. The drums are marked "Accident" "Fog" and "Ice". A shot from travelling car as it approaches warning signal. MS. Crashed car being towed away by breakdown lorry.