Urban Traffic Safety Analysis and Assessment System Based on GIS:System Design,Key techniques and Implementation Strategy
As the most important technical support to digital transportation and intelligent transportation system (ITS),Geographical Information System (GIS) has become an important tool for traffic safety assessment,management and accident prevention.In this paper,the key techniques,system design method and implementation strategy of Traffic Safety Analysis and Assessment System (TSAAS) is investigated based on the integration of GIS and traffic safety models.TSAAS takes road segment as basic units and uses node sets and directed edge sets to describe road network.Event driven spatial data model is adopted to organize information about traffic accidents in order to link accidents with road network data.In order to solve the problem of data storage,Microsoft SQL Server2000 is used as the basic database platform and SuperMap SDX+ large spatial database engine is used.Traffic safety analysis modeling is usually based on many random accident events,and the results are expressed by certain numerical criteria.Taking two typical traffic safety models:black point model and traffic safety assessment model as examples,the integration of traffic models with GIS is explored in detail.Finally the implementation strategy of TSAAS is investigated,and the secondary development scheme based on ComGIS product,SuperMap Objects,is recommended.
Geographical Information System (GIS) Traffic Safety Traffic Safety Analysis and Assessment System (TSAAS) Event-driven data model
Du Peijun Pei Jianzhong Chen Xiaowei Yan Zhigang
Department of Remote Sensing and Geographical Information Science,China University of Mining and Tec College of Highway Engineering,Changan University.Xian 710064,China;Key Laboratory for Special Are Department of Remote Sensing and Geographical Information Science,China University of Mining and Tec
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）