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About the data

The crash data [ZIP, 32 MB] provides information about each individual traffic crash reported to the Transport Agency by the NZ Police since 1 January 2000.

Crash data source

The data was 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 and 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.

Updates in the latest release

March 2018 – this release includes information about the type and number of vehicles involved in the crash. This information will continue to be provided in future updates.

Data completeness

We estimate that data on crashes occurring in the most recent quarter will be approximately 96 percent complete in this open data when it is updated.

For our CAS processing targets and up-to-date information on the number of outstanding crash reports, visit our CAS processing update page.

Frequency

Data is currently available from 1 January 2000 and is updated quarterly.

Dataset format and contents

Data available on this page is presented in a comma separated value ‘.csv’ file to enable open use.

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, 14 KB].

Data relates to all fatal, serious injury, minor injury, and non-injury crashes reported to the Transport Agency by the NZ Police since 1 January 2000.

Future releases

We are looking at what additional variables can be added to this file while still protecting personal information. The ‘updates in the latest release’ section of this webpage will be updated if any new variables are added to the data file.

Disaggregated crash map

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]

Disclaimer

While the Transport Agency has taken reasonable care in compiling this information, the information is provided on an ‘as is, where is’ basis and the Transport Agency will not be liable for any action taken on the basis of the information. For further information see the Transport Agency disclaimer


Creative Commons License (external link)

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

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