Research On Public Transport Signal Priority Method Based On Operating Timetable

With the rapid advancement of urbanization,the traffic problem has become increasingly prominent.More and more scholars have realized that the development of urban public transportation is the focal point of the future urban transportation construction.More and more cities have embarked on the road of building a public transportation city.As a kind of green transportation with high load,low energy and less pollution,public transportation has been favored by the government.However,urban residents,as actual users,are not satisfied with public transportation.This is mainly caused by the common problems in the bus operation system,such as the aging of the vehicle equipment,the low comfort level of the ride,and the congestion of the carriage.But the biggest problem is attributed to the punctuality rate of the bus.Therefore,this paper takes the deviation of bus schedule as the research object and builds an optimization model of bus priority signals at intersections.The specific work is as follows:Firstly,the basic theory of bus priority control is introduced,the concept of bus priority is expounded,and the control measures and application scope of bus signal priority are combed.Secondly based on the analysis of existing bus signal optimization method on the basis of some of the deficiencies,is put forward to bus priority window as constraint conditions,the minimum intersection bus timetable deviations as the optimization target of bus single intersection signal optimization model,the results show that per capita and reduce the intersection delay as the target model of bus priority,compared to By optimizing the deviation of the schedule,the punctuality of the bus can be better reflected.Then,considering the application of bus priority in trunk line coordination,a multi-intersection bus signal optimization model based on schedule is established.The model mainly considers the bus in the main road direction.According to the particularity of the early bus and the late bus,two bus priority control strategies of increasing delay and decreasing delay are proposed to improve the deviation of the non-on-time bus schedule.Finally,a concrete example is given to verify the good optimization effect of the model.Based on the per capita delay model,the bus signal priority model established in this paper is a further attempt to study the bus signal priority in the schedule deviation as the control target,which provides a reference for improving the punctuality rate and service level of the bus system.