Establishment of the characteristic evaluation index system of secondary task driving and analyzing its importance

Abstract

The study of secondary task driving behavior is a spotlight in the domain of transportation research, the precondition of this is to have a scientific evaluation index system which could be used for quantitative analysis of driver behaviors. In order to get the scientific characteristic evaluation index system of secondary task driving and weigh the values of each index. The parameters of the driver’s eye-movement behavior and vehicle operation state were measured by using a “driver behavior analysis experimental platform”, and the change rule of driving was investigated. After the linear dimensional reduction by Principal Component Analysis, the redundant evaluation indexes were eliminated and the amount of evaluation indexes was simplified from 17 to 8, then the index set which could reflect the characteristic of driver’s behavior was built. On this foundation, the weights of each characteristic evaluation index were calculated by entropy method. The results showed that in the characteristic evaluation index set, the weight of Standard Deviation of Blink Duration is 0.269, which indicates it is the most significant one. The weight of Peak Value of Saccadic Velocity and Mean Blink Duration were 0.022 and 0.015, indicating that they are the least significant ones.