Bus Priorty Coordination Control And Simulation On Arteries

Faced with the current situation of the benign development of public transport in China,with the growth of the demand for public transport,Bus priority coordination should be taken into account in the process of future traffic development,so as to achieve the effect of public transport coordination on the basis of not destroying the coordination effect of the original social vehicles.The lack of coordinated trunk buses will increase the number of parking and travel time of buses on the line at intersections.In order to maximize the benefits of social vehicles and buses in trunk direction,this paper proposes a priority coordinated control method for trunk bus.This method not only ensures the green wave effect of all vehicles in trunk coordinated direction,but also takes into account the traffic of vehicles in non-priority coordinated direction.On the basis of comprehensive consideration,this paper first introduces the basic theory of bus priority.The paper elaborates on the principles to be followed when setting up bus lanes,the forms to be set up for bus lanes,the design requirements and settings of bus lanes at intersections from three aspects:the setting of bus infrastructure,the setting of bus phase sequence and the strategy of bus priority.Form,location of vehicle detectors at different intersections in coordinated line,phase sequence of bus phase in signal scheme when coordinated line control is implemented,selection of bus priority strategy and discriminant conditions to be satisfied when response priority strategy is adopted.Then based on bus priority theory for bedding,puts forward the main bus priority coordinated control scheme,this article main bus priority harmonious thought is in does not destroy the original social vehicles under the condition of green wave bandwidth,according to the coordinate phase direction critical queue length of the vehicle and the upper and lower bounds of original green wave model constraints,calculate arterial coordination control coordinate non-priority phase compressible green light extension of time and the red light early break time.Finally,the comprehensive operation index(PI)of the intersection of the whole main line is calculated.According to the priority control scheme is proposed in this paper for arterial coordination bus,select the appropriate simulation environment,using the VISSIM simulation software for the established model,by comparing the main direction for bus priority simulation data found that with the increase of saturation along the intersection,the implementation of bus priority of bus delay per capita decreases gradually become smaller,and bring social vehicles per capita increases gradually with the increase of the delay.