Traffic Conflict of Urban Intersection Based on Vehicle Composition

Traditional studies of traffic conflict ignored the affects of vehicle composition and take cars as particles to calculate. According to the actual measurement, the vehicle composition factor can´t be ignored. To solve this problem, on the basis of the critical conflict region, this paper builds a model on vehicle composition and introduces the traffic conflict discriminate in detail. Through the intersection traffic conflict survey, we can draw a conclusion: the higher the proportion of large car, the more traffic conflict.