Quantification method of traffic conflict based on pupil diameter
1. School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo, Shandong 255000, China; 2. School of Transportation, Jilin University, Changchun, Jilin 130022, China
Abstract：Traffic conflict data, illumination data and pupil diameter data of drivers were statistically analyzed to show that the pupil diameter could be influenced by illumination with consistent changing trends of conflict severity and pupil diameter. The traffic conflict quantification method with pupil diameter as quantitative index was proposed. The illumination-pupil diameter model was established and used for the data compensation of pupil diameter to reduce the effect of illumination. The data in real vehicle tests were collected and used to quantify traffic conflicts by the proposed method. The results show that the q value from quantification method and the driver subjective scores are increased with the increasing of vehicle speed, and the increasing rates are decreased with the increasing of vehicle speed. The quantification results and the driver subjective scores in traffic conflict are consistent, and the proposed method can provide a way for traffic safety evaluation on the basis of driver cognition.
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2020, Vol. 41 
