Abstract

Driving characteristics of elderly and younger drivers who were following another vehicle were examined. Vehicle and driver behavior data (vehicle speed, space headway, operation of brake/accelerator pedals and road traffic conditions) were recorded on videotape. Reaction time, time headway and braking time in the case that a driver reacted to braking of a lead vehicle were analyzed. The result shows; reaction time of the elderly driver is longer than that of the younger, however driving speed of the elderly is lower and their time headway is longer to compensate for their longer reaction time.

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