关键词: 高速公路, 拥堵初发点计算, 数据检索, 收费数据, 出行服务

Abstract: Recently, after the highway traffic jams, how to utilize the huge amounts of toll collection data to quickly and accurately retrieve the beginning point of traffic jams is still lack of satisfactory solutions. This article, based on the highway toll collection data of Hunan province, retrieves the traffic parametric features, such as the car entry time, car departure time, travel time, and motorcycle type, and proposes a method to calculate the beginning point of jams between adjacent two toll collection station. The method chooses the farthest and slowest car types in same stretch of roads, establishes corresponding equation set, and retrieves the equation variable values based on toll collection data, thus getting the information of the beginning point of jams. The evaluation results show that the proposed method can efficiently retrieve the beginning location and the beginning time of the jams between adjacent stations. This study will contribute to the travel services, traffic efficiency evaluation and traffic organization management significantly.

Key words: highway, calculation of beginning point of jams, data retrieve, toll collection data, travel service