Southampton road traffic accidents
Southampton recorded 16,654 collisions in the STATS19 data between 1999 and 2025, involving 20,040 casualties. Of these collisions, 103 were fatal and 2,730 were serious. Recorded collisions in 2025 were up 5% on 2024.
Severity Breakdown
- Fatal
- 103
- Serious
- 2,730
- Casualties
- 20,040
- Fatal
- 103
- Serious
- 2,730
- Casualties
- 20,040
Collisions by Year
Areas covering Southampton
Roads in Southampton
Postcode districts in Southampton
Planning applications nearby
Data from PlanIndex, an index of UK planning registers.
Data from PlanIndex, an index of UK planning registers.
Accidents in Southampton
Road collision statistics for Southampton
Collisions recorded
16,654
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
20,040
Casualties recorded across every collision in this area.
Fatal collisions
103
Collisions in which at least one person died.
Serious collisions
2,730
17% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in Southampton
Collisions in Southampton are most frequently recorded on a Friday (16.8% of the total), with 28.4% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
82.5% of recorded collisions in Southampton happen on a single carriageway. Around 15.4% were recorded in adverse weather such as rain, snow or fog.
The collisions in Southampton have produced 20,040 casualties. Pedestrians account for 17.5% 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 1,575 collisions, Monday 2,404 collisions, Tuesday 2,620 collisions, Wednesday 2,580 collisions, Thursday 2,516 collisions, Friday 2,799 collisions, Saturday 2,160 collisions.
Light conditions
Light conditions: Daylight 11,932 collisions, Darkness 4,722 collisions.
Road type
Road type: Single carriageway 13,732 collisions, Dual carriageway 1,944 collisions, Roundabout 717 collisions, One way street 104 collisions, One way street/Slip road 72 collisions, Slip road 57 collisions, Unknown 28 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 248 collisions, 30 mph 14,453 collisions, 40 mph 1,217 collisions, 50 mph 454 collisions, 60 mph 63 collisions, 70 mph 219 collisions.
Weather at the time
Weather at the time: Fine no high winds 13,931 collisions, Raining no high winds 1,959 collisions, Other 249 collisions, Raining + high winds 244 collisions, Fine + high winds 160 collisions.
Who was hurt
Who was hurt: Driver or rider 12,657 casualties, Passenger 3,879 casualties, Pedestrian 3,504 casualties.
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Recent Accidents
Showing 20 of 16,654 accidents
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SeriousAccident 2022440240267
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SlightAccident 2022440232944
SlightFrequently asked questions about road accidents in Southampton
How many road accidents have there been in Southampton?
16,654 collisions have been recorded in Southampton in the STATS19 road safety data between 1999 and 2025, involving 20,040 casualties.
How many of the collisions in Southampton were serious or fatal?
103 were fatal and 2,730 were serious — 17% of all recorded collisions in Southampton resulted in a death or serious injury.
When do most road accidents happen in Southampton?
Friday is the most common day for collisions in Southampton, accounting for 16.8% of them, and 28.4% of all collisions here happen in darkness.
What kind of roads do collisions in Southampton happen on?
82.5% of collisions in Southampton are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in Southampton?
Pedestrians make up 17.5% of the 20,040 casualties recorded in Southampton.
Is road safety in Southampton getting better or worse?
Recorded collisions in Southampton rose 5% in 2025 compared with 2024. 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 Southampton 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 Southampton cover 1999 to 2025.