Title :
Study on at-grade intersection spacing of highways using microscopic traffic simulation
Author :
Zhang, Guoqiang ; Lu, Jian ; Wang, Wei ; Xiang, Qiaojun
Author_Institution :
Transp. Coll., Southeast Univ., Nanjing
Abstract :
Safety performance of highways has always been the focus of traffic engineering studies. Although many factors impact safety of highway transportation, at-grade intersection spacing is by far one of the most important factors. In reality, many situations can lead to closely neighbored intersections which become major causes of traffic accidents. To improve safety, intersection spacing should guarantee that vehicles from upstream intersection can be stabilized before coming to the next intersection. Therefore, minimum intersection spacing should be satisfied. By exploring characteristics of traffic flows released from upstream intersection, the paper has put forward a study approach, which analyzes safety state of vehicles by examining speed index CSV (coefficient of speed variance). Using microscopic traffic simulation software TSIS (traffic software integrated system), simulation models for the study have been built up and calibrated. Finally, based upon analysis of data from simulation, standards for minimum intersection spacing of highways are given.
Keywords :
automated highways; road accidents; traffic engineering computing; at-grade intersection spacing; highway transportation; microscopic traffic simulation; traffic accidents; traffic engineering; traffic flows; traffic software integrated system; Analysis of variance; Automotive engineering; Data analysis; Microscopy; Road accidents; Road safety; Road transportation; Software systems; Traffic control; Vehicle safety;
Conference_Titel :
System Simulation and Scientific Computing, 2008. ICSC 2008. Asia Simulation Conference - 7th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-1786-5
Electronic_ISBN :
978-1-4244-1787-2
DOI :
10.1109/ASC-ICSC.2008.4675396