Design Of Pedestrian Twice Crossing The Street And The Impact To The Pedestrian Delay

Pedestrian is an important part of the mixed traffic flow. How to solve the interference between the pedestrian-flow and the vehicle-flow is the important element to improve the status of China's Urban Transport. In a signal intersection with high vehicle-flow, pedestrians will wait a long time to cross the street, often that time will beyond the Waiting Psychological Limits. That will often cause pedestrian crossing the street illegally, and increase the interference to vehicles. The dissertation combined with the project of "The investigation Measures and ease traffic jams in Beijing 2010" discussed the design of pedestrian twice crossing facilities and the effect of the capacity and efficiency of the vehicles and pedestrians.The pedestrian twice crossing the street can improve the safety of pedestrians, saving the waiting time, increase the efficiency of pedestrians, reduce the rate of illegal pedestrians cross the street, reduce interference between vehicles. This dissertation discussed the set of the pedestrian twice crossing the street and the delay of the pedestrian.(1) The dissertation comprehensive analyses pedestrian crossing facilities, characteristics of pedestrians crossing the street, include the pedestrian psychology, walking speed and flow. Analysis the need to set pedestrian twice crossing the street signal and the facilities.(2) Summed up the conditions and design standards to set the pedestrian twice crossing the street setting, analysis of the change of different signals. Introduce the pedestrian delay model, use the concept of the pedestrian block to conclude the new pedestrian delay model to the pedestrian twice crossing the street.(3) The microcosmic traffic simulation software, VISSIM, is used to further validate this kind facility impact on the signal intersection. It simulate the different cases of Sitongqiao intersection with different vehicle-flow and pedestrian-flow, then discussed the change of the pedestrian delay in different case. The result shows that after set the pedestrian twice crossing the street, the pedestrian delay reduce 30.85%. The capacity and efficiency of pedestrians and vehicles has significantly improved.