Research On Non-motor Vehicle Crossing Mode Based On Two-phase Intersection Efficiency

In recent years,our economy has been growing continuously,and the number of motor vehicles has climbed significantly.However,with a large population and diverse urban travel modes,non-motor vehicle travel modes still occupy a large proportion.Urban intersection machine is not mixed,and traffic efficiency is low.This paper attempts to study the crossing efficiency of different crossing modes from the aspects of delay and capacity from the perspective of non-motor vehicle crossing mode.Firstly,the research progress on intersection delay and capacity at home and abroad is summarized.The research results at home and abroad are collected and analyzed,and the places that can be used for reference and the shortcomings of the research are pointed out.This paper studies the delay and capacity of two phase intersections in China by means of non-motor vehicle crossing.Secondly,by referring to the provisions in the Traffic Signal Control Guide of Germany,the non-motor vehicle crossing modes at signalized intersections are divided into three types,namely,traditional crossing mode,back-shift crossing mode of stop line and secondary crossing mode,and the characteristics of non-motor vehicle crossing modes are analyzed.Four two-phase signalized intersections with large non-motor vehicle flow were selected for investigation,including peak hourly traffic at the intersection,motor vehicle speed at the entrance,non-motor vehicle speed,signal timing,etc.Then,the intersection delay model and capacity model are constructed.Based on the Webster model and the traffic capacity of the saturation flow rate method of the United States,and based on the arrival and departure rules of non-motor vehicles,the cumulative curves of the arrival and departure of non-motor vehicles in the back-shift crossing mode and the secondary crossing mode of the stop line were drawn,and the back-shift length model of the stop line was constructed,and the vehicle delay model of the above two crossing modes and the improved lane capacity model of the intersection were derived.It provides a reference model for further study of two-phase intersection traffic efficiency.Finally,based on the constructed delay model and capacity model,combined with the case survey data,the per capita delay and lane capacity at intersections under different crossing modes were calculated and analyzed,and the change rule of delay,capacity and intersection flow was studied.The comparison results of examples show that,under the same flow rate,the intersections with the parking line moving back across the street have the smallest per capita delay,the largest intersection capacity and the best traffic efficiency.The research results provide a theoretical basis for the selection of street crossing mode and optimization of traffic management and control scheme at urban non-mixed intersections.