NORTH CANTERBURY SH NETWORK, CRASH HISTORY GIS WEBSITE

On behalf of NZTA and the North Canterbury State Highway Network Maintenance Consultant, a Geographical Information System (GIS) analysis tool to analyse crashes for the last ten years was produced. This showed graphically various attributes of crashes including crash type and crash severity. Layers of high risk rural roads by collective and personal risk, kiwiRAP star rating, and an economic evaluation manual social cost were developed to provide a range of assessment methodologies of crash history. Crash density mapping was developed using Arc model builder scripting to provide a better visual presentation of areas of significant crash risk. In order to identify the relevance of the individual items in the proposed programme of works including minor improvement projects, area wide treatments and reseals were mapped to allow spatial analysis to be carried out.