关键词: 低等级城市道路；定量；韧性模型；交通隐患

Abstract: With the rapid development of urbanization in China, some low-grade urban roads have obvious unsafe operation characteristics due to the lack of reasonable planning. Among them, Lhasa is due to its special geographical environment, imperfect transportation infrastructure, low-grade roads in the city, and many interference factors affecting traffic safety. It is particularly important to analyze the causes and propose solutions. In this paper, five common interference factors of non-motor vehicles, roadside pedestrians, cross-street pedestrians and various motor vehicle entrances and exits in Lhasa are taken as the research object. The driving characteristics of motor vehicles are quantitatively studied by resilience quantification method, and the traffic safety risk resilience model is established. The traffic safety risk resistance ability of low-grade urban roads is calculated by the recovery speed after the influence of interference factors. Finally, the analysis shows that the traffic safety method can be improved to alleviate the traffic hazards caused by the interference of traffic participants on low-grade urban roads, and provide key governance objectives for the future management of low-grade urban road traffic order in Lhasa.

Key words: Low-grade urban roads; Quantitative; Resilience model; Traffic hazards