No title - traffic experiment at New Road Research Laboratory in Crowthorne, Berkshire.
Various shots traffic flow experiment: vehicles driving across air strip nose to tail - simulating a traffic jam. C/U cars going past to traffic junction. C/U traffic light changing to stop. Panning shot cars coming to halt at traffic light. L/S of traffic moving.
M/S double-decker bus which functions as mobile office for researchers. Interior shot of top deck showing timekeepers. C/U woman holding counters. C/U woman writing on clipboard. C/U woman operating counter. C/U man talking to microphone. C/U large time counter in roof of the bus. More shots traffic flowing past camera.
C/U of worn tyre on a Mini. C/U new tyre on another Mini. Panning shot two Minis doing a brake test on a wet surface - the one with worn tyres skids much further. Panning shot an E-type Jaguar skidding on wet surface. Pan down street lamppost which has a special breakaway joint at the bottom and is made from lightweight material. C/U the breakaway joint on the lamppost. Panning shot car driving into the lamppost.