Almost all traffic accidents (collisions) occur when a vehicle's stopping distance is greater than the distance headway between it and other vehicles or obstacles. Stopping distance is sometimes lengthened unexpectedly by a drivers' sudden delay in cognition or sudden drops in braking power, while the distance headway can be shortened by a driver's impulse so as to shorten the time of the arrival. As a result, traffic accidents occur when the stopping distance becomes greater than the driver's distance headway. Therefore, it is important to maintain greater headways than suddenly lengthening stopping distances. In this study, authors investigated driver's headway, time of the arrival and collision prone index (CPI) when drivers drove a vehicle with speed impulse. As a result, it was found that many drivers believed that their time of arrival would be shortened by speeding, however the difference in traveling time between driving fast and driving at normal speeds was almost always not meaningfully large. For the covering abstract see ITRD E123876.
Samenvatting