Study On Microscopic Crossing Behavior Model And Simulation Of Bicycles At Grade Intersection

Now in the many cities, the congestion problem has been a researched focus because it becomes more and more seriously. The mixed traffic of the intersection is one of the most important factors, which cause the traffic system complex. In china, because the bicycle plays an important role in urban traffic, the study on the bicycle microscopic behaviors at the intersection can provide a theoretical basis for improving the capacity and enhancing the security of the intersection. And also it has practical significance for improving the traffic management.In this paper, firstly, the previous studies on the microscopic behaviors of the bicycle are analyzed and reviewed. Secondly, using video cameras, the traffic data are gathered at the typical intersections, and the method of extracting the data is designed, which characterize the behavior of a bicycle based on photographic measurement principle. Then the microscopic behaviors of the bicycle passing on the intersection are analyzed, including the speed distributions of the bicycle, the factors, such as the type of intersection, gender of person and the passing period. The distribution of the accepted gap and lag of bicycle crossing the motor vehicle flow are analyzed, which consider some main factors including the gender of person, the type of motor and whether to stop.Based on the analyzed data results, a probability choosing model describing the behavior of straight-running bicycle passing the right turn vehicle flow is presented, which considers the car types, the rear motor speed and the gap or lag. Finally, based on the Agent theory, a simulation model and program for the signalize intersection are presented, and the behaviors of the bicycles crossing the motor flow are simulated using the software platform NetLogo, the results shows that the probability choosing model of the traversing behaviors is well validated.