S4 postcode district road traffic accidents
The S4 postcode district recorded 1,585 collisions in the STATS19 data between 1999 and 2025, involving 2,204 casualties. Of these collisions, 5 were fatal and 269 were serious. Recorded collisions in 2025 were up 62% on 2024.
Severity Breakdown
- Fatal
- 5
- Serious
- 269
- Casualties
- 2,204
- Fatal
- 5
- Serious
- 269
- Casualties
- 2,204
Collisions by Year
Areas covering S4
Towns in S4
Roads in S4
Planning applications nearby
Data from PlanIndex, an index of UK planning registers.
Data from PlanIndex, an index of UK planning registers.
Accidents in the S4 postcode district
Road collision statistics for the S4 postcode district
Collisions recorded
1,585
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
2,204
Casualties recorded across every collision in this area.
Fatal collisions
5
Collisions in which at least one person died.
Serious collisions
269
17.3% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in the S4 postcode district
Collisions in the S4 postcode district are most frequently recorded on a Friday (16.8% of the total), with 25.9% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
83.2% of recorded collisions in the S4 postcode district happen on a single carriageway. Around 21% were recorded in adverse weather such as rain, snow or fog.
The collisions in the S4 postcode district have produced 2,204 casualties. Pedestrians account for 20.3% 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 148 collisions, Monday 237 collisions, Tuesday 250 collisions, Wednesday 240 collisions, Thursday 251 collisions, Friday 267 collisions, Saturday 192 collisions.
Light conditions
Light conditions: Daylight 1,175 collisions, Darkness 410 collisions.
Road type
Road type: Single carriageway 1,319 collisions, Dual carriageway 104 collisions, Roundabout 83 collisions, One way street 38 collisions, One way street/Slip road 29 collisions, Unknown 8 collisions, Slip road 4 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 56 collisions, 30 mph 1,446 collisions, 40 mph 83 collisions.
Weather at the time
Weather at the time: Fine no high winds 1,238 collisions, Raining no high winds 242 collisions, Other 36 collisions, Unknown 34 collisions, Fine + high winds 14 collisions.
Who was hurt
Who was hurt: Driver or rider 1,091 casualties, Passenger 665 casualties, Pedestrian 448 casualties.
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Recent Accidents
Showing 20 of 1,311 accidents
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SlightFrequently asked questions about road accidents in the S4 postcode district
How many road accidents have there been in the S4 postcode district?
1,585 collisions have been recorded in the S4 postcode district in the STATS19 road safety data between 1999 and 2025, involving 2,204 casualties.
How many of the collisions in the S4 postcode district were serious or fatal?
5 were fatal and 269 were serious — 17.3% of all recorded collisions in the S4 postcode district resulted in a death or serious injury.
When do most road accidents happen in the S4 postcode district?
Friday is the most common day for collisions in the S4 postcode district, accounting for 16.8% of them, and 25.9% of all collisions here happen in darkness.
What kind of roads do collisions in the S4 postcode district happen on?
83.2% of collisions in the S4 postcode district are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in the S4 postcode district?
Pedestrians make up 20.3% of the 2,204 casualties recorded in the S4 postcode district.
Is road safety in the S4 postcode district getting better or worse?
Recorded collisions in the S4 postcode district rose 62% 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 the S4 postcode district 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 the S4 postcode district cover 1999 to 2025.