Harpenden road traffic accidents
Harpenden recorded 791 collisions in the STATS19 data between 1999 and 2024, involving 973 casualties. Of these collisions, 6 were fatal and 108 were serious. Recorded collisions in 2024 were up 7% on 2023.
Severity Breakdown
- Fatal
- 6
- Serious
- 108
- Casualties
- 973
- Fatal
- 6
- Serious
- 108
- Casualties
- 973
Collisions by Year
Areas covering Harpenden
Roads in Harpenden
Postcode districts in Harpenden
Accidents in Harpenden
Road collision statistics for Harpenden
Collisions recorded
791
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
973
Casualties recorded across every collision in this area.
Fatal collisions
6
Collisions in which at least one person died.
Serious collisions
108
14.4% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in Harpenden
Collisions in Harpenden are most frequently recorded on a Friday (18% of the total), with 26.3% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
88.1% of recorded collisions in Harpenden happen on a single carriageway. Around 19.8% were recorded in adverse weather such as rain, snow or fog.
The collisions in Harpenden have produced 973 casualties. Pedestrians account for 18.3% of those casualties, a marker of the risk to people on foot here.
Collisions by day of the week
Collisions by day of the week: Sunday 74 collisions, Monday 124 collisions, Tuesday 123 collisions, Wednesday 127 collisions, Thursday 120 collisions, Friday 142 collisions, Saturday 81 collisions.
Light conditions
Light conditions: Daylight 583 collisions, Darkness 208 collisions.
Road type
Road type: Single carriageway 697 collisions, Roundabout 72 collisions, One way street 10 collisions, Unknown 5 collisions, Other 5 collisions, Dual carriageway 2 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 8 collisions, 30 mph 731 collisions, 40 mph 43 collisions, 60 mph 9 collisions.
Weather at the time
Weather at the time: Fine no high winds 634 collisions, Raining no high winds 101 collisions, Other 24 collisions, Raining + high winds 10 collisions, Unknown 9 collisions.
Who was hurt
Who was hurt: Driver or rider 641 casualties, Passenger 154 casualties, Pedestrian 178 casualties.
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Recent Accidents
Showing 20 of 791 accidents
Accident 20014100F0445
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SlightAccident 20014100F0422
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SlightAccident 20014100F0318
SlightAccident 20014100F0281
SlightAccident 20014100F0261
SlightAccident 20014100F0266
SeriousAccident 20014100F0262
SlightAccident 20014100F0220
SeriousAccident 20014100F0211
SlightFrequently asked questions about road accidents in Harpenden
How many road accidents have there been in Harpenden?
791 collisions have been recorded in Harpenden in the STATS19 road safety data between 1999 and 2024, involving 973 casualties.
How many of the collisions in Harpenden were serious or fatal?
6 were fatal and 108 were serious — 14.4% of all recorded collisions in Harpenden resulted in a death or serious injury.
When do most road accidents happen in Harpenden?
Friday is the most common day for collisions in Harpenden, accounting for 18% of them, and 26.3% of all collisions here happen in darkness.
What kind of roads do collisions in Harpenden happen on?
88.1% of collisions in Harpenden are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in Harpenden?
Pedestrians make up 18.3% of the 973 casualties recorded in Harpenden.
Is road safety in Harpenden getting better or worse?
Recorded collisions in Harpenden rose 7% in 2024 compared with 2023. Year-on-year figures move with both genuine risk and changes in reporting, so they are best read as a trend rather than a single verdict.
Where does the road accident data for Harpenden come from?
It comes from STATS19, the official record of personal-injury road collisions reported to the police and published by the Department for Transport. The figures for Harpenden cover 1999 to 2024.