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Number of killed or seriously injured road casualties (3-year average) (304) Metric type
- Help text
- This is the number of people of all ages killed or seriously injured (KSI) in road traffic accidents, unadusted, expressed as a 3-year (calendar) rolling average, up to the current year. This minimises the impact of fluctuations when looking at the percentage change from year to year. An annual version of this metric is also available to query.
This indicator includes only casualties who are fatally or seriously injured and these categories are defined as follows: - Fatal casualties are those who sustained injuries which caused death less than 30 days after the accident; confirmed suicides are excluded. Seriously injured casualties are those who sustained an injury for which they are detained in hospital as an in-patient, or any of the following injuries, whether or not they are admitted to hospital: fractures, concussion, internal injuries, crushings, burns (excluding friction burns), severe cuts and lacerations, severe general shock requiring medical treatment and injuries causing death 30 or more days after the accident. An injured casualty is recorded as seriously or slightly injured by the police on the basis of information available within a short time of the collision. This generally will not reflect the results of a medical examination, but may be influenced according to whether the casualty is hospitalised or not. Hospitalisation procedures will vary regionally. Slight injuries are exluded from the total, such as a sprain (including neck whiplash injury), bruise or cut which are not judged to be severe, or slight shock requiring roadside attention.
Police forces use one of two systems for recording reported road traffic collisions; the CRaSH (Collision Recording and Sharing) or COPA (Case Overview Preparation Application). Estimates are calculated from figures which are as reported by police. Since 2016, changes in severity reporting systems for a large number of police forces mean that serious injury figures, and to a lesser extent slight injuries, are not comparable with earlier years. As a result both adjusted and unadjusted killed or seriously injured statistics are available. Further information about the reporting systems can be found here:https://www.gov.uk/government/publications/road-accidents-and-safety-statistics-guidance
Areas with low resident populations but have high inflows of people or traffic may have artificially high rates because the at-risk resident population is not an accurate measure of exposure to transport. This is likely to affect the results for employment centres e.g. City of London and sparsely populated rural areas which have high numbers of visitors or through traffic.
Counts for Heathrow Airport are included in the London Region and England totals only.
- Modified
- 04 Nov 2022
- Data last updated
- 03 Oct 2023
- Short label
- No. of killed or seriously injured road casualties (3-year average)
- Status
- Live
- Output precision
- 0
- Polarity
- a low value is good
- Measure
- Count
- Dataset
- People killed or seriously injured in road traffic accidents
- Source
- Department for Transport
- is found in the following lists
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