Influence analysis of driver factors on driving reliability under raining environment

In order that researches the influence of driver factors on driving reliability under raining environment, this paper utilizes method of Principal Component Analysis to obtain representative indexes in five main driver parameters of sight, perception reaction capacity, perceptive capacity of environment, concentrating degree of attention and impatient emotion, therefore illuminates important influence of key driver factors on driving reliability. Results of case indicate that the method can effectually transform multitudinous indexes with linear correlation in influence factors set of traffic safety into representative linearly independent index variable, which provides new means for quantitative analyzing holistic reliability of driver-vehicle-environment system under complicated conditions, and provides theoretical basis for building evaluation model of driving reliability.