Hemel Hempstead road traffic accidents
Hemel Hempstead recorded 3,864 collisions in the STATS19 data between 1999 and 2024, involving 5,117 casualties. Of these collisions, 26 were fatal and 584 were serious. Recorded collisions in 2024 were down 24% on 2023.
Severity Breakdown
- Fatal
- 26
- Serious
- 584
- Casualties
- 5,117
- Fatal
- 26
- Serious
- 584
- Casualties
- 5,117
Collisions by Year
Areas covering Hemel Hempstead
Roads in Hemel Hempstead
Postcode districts in Hemel Hempstead
Accidents in Hemel Hempstead
Road collision statistics for Hemel Hempstead
Collisions recorded
3,864
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
5,117
Casualties recorded across every collision in this area.
Fatal collisions
26
Collisions in which at least one person died.
Serious collisions
584
15.8% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in Hemel Hempstead
Collisions in Hemel Hempstead are most frequently recorded on a Friday (16.4% of the total), with 28% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
78.5% of recorded collisions in Hemel Hempstead happen on a single carriageway. Around 20% were recorded in adverse weather such as rain, snow or fog.
The collisions in Hemel Hempstead have produced 5,117 casualties. Pedestrians account for 15.3% 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 341 collisions, Monday 558 collisions, Tuesday 571 collisions, Wednesday 614 collisions, Thursday 625 collisions, Friday 634 collisions, Saturday 521 collisions.
Light conditions
Light conditions: Daylight 2,782 collisions, Darkness 1,082 collisions.
Road type
Road type: Single carriageway 3,033 collisions, Roundabout 400 collisions, Dual carriageway 373 collisions, One way street 26 collisions, Unknown 15 collisions, Other 11 collisions, Slip road 6 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 27 collisions, 30 mph 3,211 collisions, 40 mph 463 collisions, 50 mph 57 collisions, 60 mph 51 collisions, 70 mph 55 collisions.
Weather at the time
Weather at the time: Fine no high winds 3,091 collisions, Raining no high winds 487 collisions, Other 137 collisions, Raining + high winds 40 collisions, Unknown 35 collisions.
Who was hurt
Who was hurt: Driver or rider 3,260 casualties, Passenger 1,075 casualties, Pedestrian 782 casualties.
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Recent Accidents
Showing 20 of 3,254 accidents
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SlightFrequently asked questions about road accidents in Hemel Hempstead
How many road accidents have there been in Hemel Hempstead?
3,864 collisions have been recorded in Hemel Hempstead in the STATS19 road safety data between 1999 and 2024, involving 5,117 casualties.
How many of the collisions in Hemel Hempstead were serious or fatal?
26 were fatal and 584 were serious — 15.8% of all recorded collisions in Hemel Hempstead resulted in a death or serious injury.
When do most road accidents happen in Hemel Hempstead?
Friday is the most common day for collisions in Hemel Hempstead, accounting for 16.4% of them, and 28% of all collisions here happen in darkness.
What kind of roads do collisions in Hemel Hempstead happen on?
78.5% of collisions in Hemel Hempstead are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in Hemel Hempstead?
Pedestrians make up 15.3% of the 5,117 casualties recorded in Hemel Hempstead.
Is road safety in Hemel Hempstead getting better or worse?
Recorded collisions in Hemel Hempstead fell 24% in 2024 compared with 2023, though year-on-year figures move with both genuine risk and changes in reporting.
Where does the road accident data for Hemel Hempstead 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 Hemel Hempstead cover 1999 to 2024.