Characteristics and typical scenario analysis of electric two-wheeler accidents at intersections with visual obstacle

doi:10.3969/j.issn.1674-8484.2023.06.002

Abstract

Abstract:

The visual obstacle is the main cause of collisions between cars and electric two-wheelers at intersections. In order to clarify the accident characteristics and facilitate the development of autonomous emergency braking (AEB) test scenarios for electric two-wheelers suitable for Chinese roads, this paper statistically analyzed the traffic violations, obstacle types and accident scenarios of 510 cases of car-to-electric two-wheel vehicle collisions with visual impairments in the Road Vulnerable Group Traffic Accidents (VRU-TRAVi) database. The relationship between the speed and time to collision (TTC) in the different collision scenarios was investigated and analyzed, the impact of obstacles on accident avoidance were also calculated with frame-by-frame analysis and direct linear theory. And the accident characteristics and scenario statistics were compared with the results of previous studies. The results show that four typical collision scenarios in the car-to-electric two-wheel vehicle with visual obstacles are extracted: fixed obstacle scenarios, adjacent lane of the vehicle in the reverse direction of travel or the same direction waiting for the vehicle as an obstacle scenarios, and non-adjacent lane moving obstacle scenarios. The average of TTC in the four scenarios are 1.12, 1.02, 0.96, and 1.27 s. The car speeds are 24-47, 27-46, 27-46, and 18-45 km/h; the electric two-wheeled vehicle speeds are15-27, 15-24, 15-24, and 16-24 km/h. The research results can provide reference for the key technology of pre-collision accident scene test of electric two-wheelers with visual impairment.

Key words: electric two-wheeler, accident scenario, visual obstacle, intersection, time to collision (TTC)

CLC Number:

U467.1+4

HAN Yong, MENG Xin, PAN Di, WU He, SHI Jinming, ZHANG Yuecong. Characteristics and typical scenario analysis of electric two-wheeler accidents at intersections with visual obstacle[J]. Journal of Automotive Safety and Energy, 2023, 14(6): 664-670.

Figures/Tables 9

References 24

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