城市道路交通事故管理和分析信息系统

A GIS SYSTEM FOR MANAGING AND ANALYZING URBAN ROAD TRAFFIC ACCIDENT

开发了一个GIS数据库来数字化存储城市交通事故数据 ,并根据事故的属性和空间特征分析这些数据 ,从而明确事故发生的原因并将城市区域按危险等级分类。在MapInfo中建立了一个样本城市的道路网 ,又进一步将收集到的 3年间的重大交通事故信息数字化后与该道路网相连接。这里采用了MapInfo和VisualBasic之间的OLE连接实现了不同格式数据间的连接。通过对交通事故数据的统计分析 ,得到了事故发生的主要原因。最后运用GIS的主题图功能显示城市中重大交通事故发生度的空间分布。

We develop a GIS database to store urban traffic accident data in digital style, and analyze these data in terms of their attribute and spatial characteristics to exploit the reasons of accidents and rank urban area with dangerous degrees. We establish a road network in MapInfo for a sample city. Second we collect three years' death traffic accidents data of the city and link these data with road network database with OLE connection between MapInfo and Visual Basic. We analyze reasons of traffic accidents to summarize major factors related to the accidents. Finally we create a hazard map to show the accident dangerous degree in the city.