Location Allocation of Pedestrian Grade Separate Crossing in urban Traffic Networks Using ArcGIS

Pedestrian safety in high speed and high traffic volume paths is an important issue in traffic engineering. Construction of Grade separate pedestrian crosswalk is a way of safe passing of pedestrian from such paths. Appropriate locating pedestrian crosswalks have an essential role for improving pedestrian’s safety. In these paper first Effective parameters in determining the optimum location of grade separate pedestrian crosswalks such as vehicle volume, pedestrian volume, vehicle speed, pedestrian waiting time for passing, cross section specifications, distance from nearest crosswalk, pedestrian accident data and land use has been studied. Data layer of identified parameters are defined in ArcGIS software. Analytical Hierarchy Process (AHP) is used in order to combine provided layers of information. Finally optimum location of grade separate pedestrian crosswalk is identified in use of ArcGIS. A sample case study has been carried out from Ghods square to Pole Rumi Street in Shariati Street of Tehran. The final output shows two appropriate optimum locations of grade separate pedestrian crosswalks.