Validating crash locations for quantitative spatial analysis: A GIS-based approach

被引:82
作者
Loo, Becky P. Y. [1 ]
机构
[1] Univ Hong Kong, Dept Geog, Hong Kong, Hong Kong, Peoples R China
关键词
police-collected crash information; spatial variables; database; geographic information system (GIS); spatial data validation; spatial analysis;
D O I
10.1016/j.aap.2006.02.012
中图分类号
TB18 [人体工程学];
学科分类号
1201 ;
摘要
In this paper, the spatial variables of the crash database in Hong Kong from 1993 to 2004 are validated. The proposed spatial data validation system makes use of three databases (the crash, road network and district board databases) and relies on GIS to carry out most of the validation steps so that the human resource required for manually checking the accuracy of the spatial data can be enormously reduced. With the GIS-based spatial data validation system, it was found that about 65-80% of the police crash records from 1993 to 2004 had correct road names and district board information. In 2004, the police crash database contained about 12.7% mistakes for road names and 9.7% mistakes for district boards. The situation was broadly comparable to the United Kingdom. However, the results also suggest that safety researchers should carefully validate spatial data in the crash database before scientific analysis. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:879 / 886
页数:8
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