01551971

Component

The conflict involved the moped at intersections has become a main problem for traffic safety in China. Previous researches mostly focus on the moped conflict frequency and the factors attribute to it, while this study concentrated on the typical moped conflict types and their characteristics. Moped conflicts can be divided by the conflict movement direction, the conflict property and the type of vehicles involved in conflict. The conflict characteristics include conflicting speed, distance-to-collision and time-to-collision. The research is based on 169 conflict samples extracted from 445 minutes of video recorded at 5 intersections in Shanghai. Firstly the research summarized the 4 main types of moped conflicts divided by the conflict movement direction and their characteristics. Significant differences exist in both distance-to-collision and time-to-collision between different conflict types. Results represent 3 types of conflicts is typical, the relationship between distance-to-collision and conflicting speed can be fitted by quadratic function. Secondly the comparison of moped conflicts with different nature reveals that there’s no significant difference in conflict severity between conflicts caused by violation behaviors and normal conflicts caused by phase shared. Further analysis shows that there’s no obvious change in riding characteristics of illegal riding mopeds and normal riding mopeds. Thirdly the vehicle types have great influence on moped conflicts: the distance-to-collision of moped-moped conflict is far shorter than that of moped-car conflict. Besides, the severity of the former is much worse than the latter. Countermeasures about the moped safety management at intersections are proposed.

This paper was sponsored by TRB committee ANF30 Motorcycles and Mopeds.

01550057

15-2978

English

18p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; Photos; References (19) ; Tables

Automobiles; Crashes; Intersections; Mopeds; Traffic conflicts; Traffic safety; Vehicle mix

Shanghai (China)

Highways; Safety and Human Factors; Vehicles and Equipment; I91: Vehicle Design and Safety

Transportation Research Board Annual Meeting 2015 Paper #15-2978

TRIS, TRB, ATRI

Dec 30 2014 1:00PM