Portsmouth road traffic accidents
Portsmouth recorded 15,374 collisions in the STATS19 data between 1999 and 2025, involving 18,015 casualties. Of these collisions, 60 were fatal and 2,396 were serious. Recorded collisions in 2025 were down 3% on 2024.
Severity Breakdown
- Fatal
- 60
- Serious
- 2,396
- Casualties
- 18,015
- Fatal
- 60
- Serious
- 2,396
- Casualties
- 18,015
Collisions by Year
Areas covering Portsmouth
Roads in Portsmouth
Postcode districts in Portsmouth
Planning applications nearby
Data from PlanIndex, an index of UK planning registers.
Data from PlanIndex, an index of UK planning registers.
Accidents in Portsmouth
Road collision statistics for Portsmouth
Collisions recorded
15,374
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
18,015
Casualties recorded across every collision in this area.
Fatal collisions
60
Collisions in which at least one person died.
Serious collisions
2,396
16% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in Portsmouth
Collisions in Portsmouth are most frequently recorded on a Friday (16.7% of the total), with 26.4% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
78.4% of recorded collisions in Portsmouth happen on a single carriageway. Around 13.2% were recorded in adverse weather such as rain, snow or fog.
The collisions in Portsmouth have produced 18,015 casualties. Pedestrians account for 17.2% 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 1,470 collisions, Monday 2,180 collisions, Tuesday 2,452 collisions, Wednesday 2,322 collisions, Thursday 2,386 collisions, Friday 2,575 collisions, Saturday 1,989 collisions.
Light conditions
Light conditions: Daylight 11,315 collisions, Darkness 4,059 collisions.
Road type
Road type: Single carriageway 12,055 collisions, Dual carriageway 1,654 collisions, Roundabout 1,204 collisions, One way street 254 collisions, One way street/Slip road 130 collisions, Slip road 49 collisions, Unknown 28 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 1,276 collisions, 30 mph 12,321 collisions, 40 mph 1,059 collisions, 50 mph 135 collisions, 60 mph 176 collisions, 70 mph 407 collisions.
Weather at the time
Weather at the time: Fine no high winds 13,131 collisions, Raining no high winds 1,451 collisions, Raining + high winds 241 collisions, Other 241 collisions, Fine + high winds 209 collisions.
Who was hurt
Who was hurt: Driver or rider 11,695 casualties, Passenger 3,218 casualties, Pedestrian 3,102 casualties.
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Recent Accidents
Showing 20 of 15,374 accidents
Accident 2004440KK0646
SlightAccident 2004440KK0653
SeriousAccident 2004440KK0637
SeriousAccident 2004440KK0639
SlightAccident 2004440KK0704
SlightAccident 2004440KK0636
SeriousAccident 2004440KK0635
SlightAccident 2004440KK0631
SlightAccident 2004440KK0628
SlightAccident 2004440KK0799
SlightAccident 2004440KK0623
SlightAccident 2004440KK0616
SlightAccident 2004440KK0612
SeriousAccident 2004440KK0604
SlightAccident 2004440KK0608
SlightAccident 2004440KK0603
SlightAccident 2004440KK0599
SlightAccident 2004440KK0594
SlightAccident 2004440KK0586
SlightAccident 2004440KK0581
SlightFrequently asked questions about road accidents in Portsmouth
How many road accidents have there been in Portsmouth?
15,374 collisions have been recorded in Portsmouth in the STATS19 road safety data between 1999 and 2025, involving 18,015 casualties.
How many of the collisions in Portsmouth were serious or fatal?
60 were fatal and 2,396 were serious — 16% of all recorded collisions in Portsmouth resulted in a death or serious injury.
When do most road accidents happen in Portsmouth?
Friday is the most common day for collisions in Portsmouth, accounting for 16.7% of them, and 26.4% of all collisions here happen in darkness.
What kind of roads do collisions in Portsmouth happen on?
78.4% of collisions in Portsmouth are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in Portsmouth?
Pedestrians make up 17.2% of the 18,015 casualties recorded in Portsmouth.
Is road safety in Portsmouth getting better or worse?
Recorded collisions in Portsmouth fell 3% in 2025 compared with 2024, though year-on-year figures move with both genuine risk and changes in reporting.
Where does the road accident data for Portsmouth 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 Portsmouth cover 1999 to 2025.