Near misses as a measure of safety at urban intersections.

Films of dangerous traffic events were taken. The dangerous events were observed on real time television monitors. Forty-three sequences were analyzed, and a computer program was devised to convect the coordinate output from the film reader into motion parameters for vehicles participating in the dangerous manoeuvres. The addition of near miss counts as a safety monitoring method to the present method which uses accident counts is discussed and a plan for implementation of the method is outlined.