Road Safety Evaluation Based on Fuzzy Logic

Abstract:

Based on numerous research works on road traffic safety, the difference between the designed speed and the operating speed and the operating speed difference between successive road segments were chosen as the evaluation indexes. Some tests were carried out to obtain the best adaptation of the fuzzy judgment to the expected accident late to define the shape of the membership functions. Consequently, a fuzzy model for road traffic safety evaluation is established. Moreover, a more careful evaluation is obtained on the basis of fuzzy model classification. Finally, the evaluation process is illustrated by a case study.

Key words:road safety evaluation; fuzzy logic; speed; road safety level