Study on the Establishment of Vulnerability Source Evaluation Model for the Road Traffic Safety

The traffic system is an extremely complex coupling system. This chapter establishes the traffic system vulnerability model based on the complexity of the system and analyzes the vulnerability source. The vulnerability source model of traffic safety is set up by employing fuzzy analytical hierarchy process. The study establishes secondary vulnerability source indexes, which consist of human, vehicle, road and environment, and third vulnerability source indexes, which consist of driver and non-driver (human); motorized vehicle and non-motorized vehicle (vehicle); urban road and highway (road); controllable environment and non-controllable environment (environment). Conclusions demonstrate that the influence degree of the road traffic safety's vulnerability source is from the big to the small: the driver, the motorized vehicle, the highway, the non-driver, the non-motorized vehicle, the controllable environment, the urban road and the non-controllable environment. The result of the evaluation for the model is similar to the current situation of road traffic safety, and thus, it can be taken as a valuable reference to promoting the traffic safety.