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Crash data source

These crash data [ZIP, 30 MB] were extracted from the Transport Agency Crash Analysis System (CAS).  CAS records all traffic crashes as reported to the Transport Agency by the NZ Police. Not all crashes are reported to the NZ Police. The level of reporting increases with the severity of the crash. Due to the nature of non-fatal crashes it is believed that these are under-reported.

CAS covers crashes on all New Zealand roadways or places where the public have legal access with a motor vehicle.

Our target is to process all fatal crashes within one working day of the crash report being received. This target continues to be achieved.

Our target is to process all injury crashes (serious and minor injury) within four weeks of the crash report being received. There were some processing delays in early 2017. As a result of an increase in resourcing, a significant number of previously unprocessed crash reports have now been entered. It is estimated that there are approximately 2,000 crash reports still to be entered as at the end of November 2017. We anticipate that the majority of these unprocessed crash reports will be for non-injury crashes.

A map visualising the disaggregated crash data (external link) is available or you can access this via the Open Data Portal (external link) . The map shows the location of each individual recorded crash by severity level (i.e. non-injury, minor injury, serious injury and fatal). It also contains additional information relating to the crash, such as year the crash occurred and the Territorial Authority in which it occurred. The charts currently shown in the map will be updated in the future to include more options. Data can be selected in the map and exported in the same table format available on this website. View the user guide to learn more. [PDF, 1.1 MB]

Dataset format and contents

Data available on this page are presented in a comma separated value ‘.csv’ file to enable open use. Data is currently available from 1 January 2000 – 30 September 2017, and is updated quarterly. The dataset includes crash variables confirmed as non-personal data. Further information about the variables contained in this data can be found in the metadata file [CSV, 12 KB].

Latest release

Non-injury crash information is now included in the disaggregated crash data file. This information will continue to be provided in quarterly updates.

Future releases

We are looking at what additional variables can be added to this file while still protecting personal information. This webpage will be updated if any new variables are added to the data file.

Creative Commons License (external link)

This work is licensed under a Creative Commons Attribution 4.0 International License (external link) .