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Data Provider: Welsh Government National Statistics Recorded road accidents by number of vehicles, severity of accident and Police force area
Area Code[Filter]
[Collapse]Severity 1[Filter]
Severity 2[Filter]
[Collapse]Number of vehicles involved[Filter]
[Collapse]Number of vehicles involved 1
Number of vehicles involved 2
Date 1
[Collapse]Area 1
Area 2
[Collapse]TotalClick here to sortTotal
[Expand]Click here to sort1-5 Vehicles[Expand]Click here to sort6-10 Vehicles[Expand]Click here to sort11+ Vehicles
[Collapse]2019(r) 4,3237.(r) 4,330
2019January to March[Collapse]Total Welsh Police(r) 1,0172.(r) 1,019
Total Welsh Police[Expand]Dyfed-Powys Police(r) 237..(r) 237
[Expand]Gwent Police170..170
[Expand]North Wales Police223..223
[Expand]South Wales Police3872.389
April to June[Collapse]Total Welsh Police(r) 1,0831.(r) 1,084
Total Welsh Police[Expand]Dyfed-Powys Police(r) 283..(r) 283
[Expand]Gwent Police173..173
[Expand]North Wales Police223..223
[Expand]South Wales Police4041.405
July to September[Collapse]Total Welsh Police(r) 1,1411.(r) 1,142
Total Welsh Police[Expand]Dyfed-Powys Police341..341
[Expand]Gwent Police187..187
[Expand]North Wales Police(r) 259..(r) 259
[Expand]South Wales Police3541.355
[Expand]October to December(r) 1,0823.(r) 1,085
2018January to March[Collapse]Total Welsh Police9362.938
Total Welsh Police[Expand]Dyfed-Powys Police2412.243
[Expand]Gwent Police166..166
[Expand]North Wales Police214..214
[Expand]South Wales Police315..315
April to June[Collapse]Total Welsh Police1,0282.1,030
Total Welsh Police[Expand]Dyfed-Powys Police291..291
[Expand]Gwent Police131..131
[Expand]North Wales Police248..248
[Expand]South Wales Police3582.360
July to September[Collapse]Total Welsh Police1,1602.1,162
Total Welsh Police[Expand]Dyfed-Powys Police3292.331
[Expand]Gwent Police173..173
[Expand]North Wales Police278..278
[Expand]South Wales Police380..380
October to December[Collapse]Total Welsh Police1,0911.1,092
Total Welsh Police[Expand]Dyfed-Powys Police275..275
[Expand]Gwent Police1611.162
[Expand]North Wales Police245..245
[Expand]South Wales Police410..410
2017January to March[Collapse]Total Welsh Police1,1413.1,144
Total Welsh Police[Expand]Dyfed-Powys Police270..270
[Expand]Gwent Police1531.154
[Expand]North Wales Police226..226
[Expand]South Wales Police4922.494
April to June[Collapse]Total Welsh Police1,103..1,103
Total Welsh Police[Expand]Dyfed-Powys Police275..275
[Expand]Gwent Police132..132
[Expand]North Wales Police235..235
[Expand]South Wales Police461..461
July to September[Collapse]Total Welsh Police1,1841.1,185
Total Welsh Police[Expand]Dyfed-Powys Police340..340
[Expand]Gwent Police1701.171
[Expand]North Wales Police282..282
[Expand]South Wales Police392..392
October to December[Collapse]Total Welsh Police1,1124.1,116
Total Welsh Police[Expand]Dyfed-Powys Police3041.305
[Expand]Gwent Police164..164
[Expand]North Wales Police2621.263
[Expand]South Wales Police3822.384
2016January to March[Collapse]Total Welsh Police1,269..1,269
Total Welsh Police[Expand]Dyfed-Powys Police309..309
[Expand]Gwent Police162..162
[Expand]North Wales Police246..246
[Expand]South Wales Police552..552
April to June[Collapse]Total Welsh Police1,1604.1,164
Total Welsh Police[Expand]Dyfed-Powys Police3011.302
[Expand]Gwent Police158..158
[Expand]North Wales Police2102.212
[Expand]South Wales Police4911.492
July to September[Collapse]Total Welsh Police1,2772.1,279
Total Welsh Police[Expand]Dyfed-Powys Police3572.359
[Expand]Gwent Police149..149
[Expand]North Wales Police280..280
[Expand]South Wales Police491..491
October to December[Collapse]Total Welsh Police1,2063.1,209
Total Welsh Police[Expand]Dyfed-Powys Police2662.268
[Expand]Gwent Police151..151
[Expand]North Wales Police259..259
[Expand]South Wales Police5301.531
2015January to March[Collapse]Total Welsh Police1,2902.1,292
Total Welsh Police[Expand]Dyfed-Powys Police258..258
[Expand]Gwent Police170..170
[Expand]North Wales Police3031.304
[Expand]South Wales Police5591.560
April to June[Collapse]Total Welsh Police1,3421.1,343
Total Welsh Police[Expand]Dyfed-Powys Police335..335
[Expand]Gwent Police182..182
[Expand]North Wales Police3341.335
[Expand]South Wales Police491..491
July to September[Collapse]Total Welsh Police1,535..1,535
Total Welsh Police[Expand]Dyfed-Powys Police415..415
[Expand]Gwent Police177..177
[Expand]North Wales Police371..371
[Expand]South Wales Police572..572
October to December[Collapse]Total Welsh Police1,3705.1,375
Total Welsh Police[Expand]Dyfed-Powys Police3161.317
[Expand]Gwent Police160..160
[Expand]North Wales Police323..323
[Expand]South Wales Police5714.575


The number of accidents by number of vehicles, severity of accident, date and police force area

Last update
October 2020 October 2020

Next update
July 2021 (provisional)

Publishing organisation
Welsh Government

Source 1
Reported road accidents system, Welsh Government

Contact email

National Statistics

Lowest level of geographical disaggregation
Local authorities

Geographical coverage

Languages covered
English and Welsh

Data licensing
You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see

General description
The statistics refer to casualties resulting from personal injury accidents on public roads reported to the police and forwarded to the Welsh Government. Road Accident Data contains details of the accident, the number of vehicles involved and information on casualties.
Accident data contains: the description and location, the number of casualties and vehicles, severity of accident, type of road and contributory factors.
Vehicle description: includes details of vehicle type, age of driver/rider.
Casualty description: provides details of the severity of casualty, casualty class and age.
The Data Dictionary provides a detailed breakdown description of the variables that are included in all three categories.

Data collection and calculation
The police compile statistical data about road traffic accidents and casualties (called Stats19 data) for the Welsh Government and the Department for Transport (DfT). This follows police attendance at accidents that involve any personal injury, together with members of the public reporting personal injury accidents directly to the police. The figures are based on information available to the Welsh Government 14 weeks after the end of the latest quarter. The Stats19 data are a set of numeric and alphabet characters.
A casualty is defined as, a person killed or injured in an accident. One accident may give rise to several casualties. Casualties and accidents are subdivided into killed, seriously injured and slightly injured categories.
Casualties reported as killed include only those cases where death occurs in less than 30 days as a result of the accident. They do not include those who died as a result of natural causes (e.g. heart attack) rather than as a result of the accident, nor do they include confirmed suicides.
The classification of each accident is the most seriously injured casualty. For example if there are 5 casualties but only 1 fatality, the accident is classed as a fatal.

Frequency of publication

Data reference periods
2015 to 2019

Users, uses and context
There are a variety of organisations that use the Welsh road traffic accident and casualty data. The Welsh Government uses road traffic accident and casualty data to help set road safety policy. It is also used for performance indicators, both for the Welsh Government’s Transport Strategy and for some Health Performance indicators. They are also component indicators in the Welsh Government’s Child Poverty and Sustainable Development indicators.
Other users include Highway Authorities (on behalf of the Welsh Government, which is responsible for the motorway and trunk road network) and Local Authorities (which are responsible for other roads in Wales). Other bodies involved in road safety include the Safety Camera Partnership, Trunk Road Agents, and Police & Community Safety Partnerships.

Statistical quality
The figures shown may change in future if there are late amendments. Similarly, the figures for earlier years may differ from those previously published. The figures cover only road accidents reported to the police involving personal injury.
This data is obtained from administrative sources and thus may be affected by changes in procedures within those systems.
There is some possibility of under-reporting and under-recording as well as for the misclassification of accidents though these are minimised by local authorities and the Welsh Government conducting a number of data validations. For example, Welsh Government data analysts may query the location of an accident with a police force when the grid reference of an accident is in a different local authority to the one specified in the data return. These issues are discussed in more detail in a Statistical Article ‘Quality Report for Welsh Road Casualties’.
This article also summarises the sources and methods used to compile the road accident and casualty figures for Wales. It also reviews the quality of the resulting figures in terms of the six dimensions of statistical quality of the European Statistical System. The aim is to provide background information about road casualty statistics for Wales in a single document for all users of the published statistics. It is available from the following link:

Transport Road Accidents Collisions Fatal Killed Serious Slight Police Police-recorded