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Road Traffic Collision Data, Northern Ireland

Detailed data on police recorded road collisions in Northern Ireland which resulted in injuries to at least one person. Non-injury collision are not included in these datasets.

Dataset contents

There are three tables for each of the years covered, linked by an identifying number a_ref, which is unique to each year:

  • Collisions: containing information on each collision (identified by a_ref), such as location (including latitude/longitude), number of vehicles involved, severity, road conditions etc.
  • Vehicles: containing information on each of the vehicles involved in the related collisions (linked by a_ref), such as vehicle type, maneouvre being performed, whether an object on or off the carriageway was hit, driver details, whether a suspected hit and run was involved, etc.
  • Casualties: containing information on the casualties involved in the related collisions (linked by a_ref), such as age, gender, driver/passenger/pedestrian, injury extent, etc. Note that even if casualties were slightly injured they are included here as the level of the incident has been deemed serious or fatal (for other casualties involved).

For each collision there will be 1 or more vehicles involving 1 or more casualties. Note that v_id (vehicle) and c_id (casualty) relate to the relevant collision: they are not unique identifiers of their own.

Futher Information

Headline statistics for road traffic collisions can be found on the PSNI website, including daily updates on fatal collisions and historical statistics.

The collection process for these data includes the recording of details about the collision, together with the vehicles and casualties involved, which in principle can be easily discerned by the police either at the scene of the accident, or when they are reported to the police at a later date after the incident. For accidents not rated as 'fatal' or 'seriously injured' (i.e. 'slight' injuries only occuring to all casualties), fewer data are gather (for example, on vehicle movements, pedestrian locations, etc.).

The figures on injury collisions collated by the PSNI for Northern Ireland are used alongside those for England, Scotland and Wales, to give the total figures of all such collisions for the UK. These datasets are similar to Department for Transport Road Accident Data series for Great Britain.

The 2013 and 2014 data was provided to Detail Data by the PSNI in July 2015 via Freedom of Information, and used in the article Two years of death and serious injury on Northern Ireland's roads.

Data and Resources

Dataset Info

These fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web.
Police Service of Northern Ireland
Modified Date
Release Date
Open Definition
Spatial / Geographical Coverage Area (WKT)
POLYGON ((-8.16926 55.4436, -5.08667 55.4436, -5.08667 53.8702, -8.16926 53.8702, -8.16926 55.4436))
Spatial / Geographical Coverage Location
Northern Ireland
Temporal Coverage
01/01/2013 to 31/12/2015
Contact Name
PSNI Traffic Statistician
Contact Email