Effects of Rain on Daily Traffic Volume and on Driving Behaviour (Effecten vanregen op verkeersvolume en op rijgedrag)

摘要

As a part of the project road and weather conditions, a study was carried outwith the aim to investigate the effects of rain on total daily traffic volume, and on driving behavior. With respect to the daily traffic volume, no effect of rain was found. Apparently, rain does not cause a major modality shift towards road traffic. Driving behavior in rain was found to be more cautious than in dry weather. The mean speed and the percentage of short time headways (< 1 s) were reduced in rain. Also the percentages of Time-To-Collisions < 5 and < 10 s were reduced in rain. However, since several safety studies reveal a higher accident rate in rain, this adaptation of driving behavior to rain is apparently insufficient to maintain the same level of safety.