SM4 postcode district road traffic accidents
The SM4 postcode district recorded 2,413 collisions in the STATS19 data between 1999 and 2024, involving 2,945 casualties. Of these collisions, 16 were fatal and 338 were serious. Recorded collisions in 2024 were unchanged on 2023.
Severity Breakdown
- Fatal
- 16
- Serious
- 338
- Casualties
- 2,945
- Fatal
- 16
- Serious
- 338
- Casualties
- 2,945
Collisions by Year
Areas covering SM4
Towns in SM4
Roads in SM4
Accidents in the SM4 postcode district
Road collision statistics for the SM4 postcode district
Collisions recorded
2,413
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
2,945
Casualties recorded across every collision in this area.
Fatal collisions
16
Collisions in which at least one person died.
Serious collisions
338
14.7% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in the SM4 postcode district
Collisions in the SM4 postcode district are most frequently recorded on a Wednesday (16.8% of the total), with 25.2% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
60.7% of recorded collisions in the SM4 postcode district happen on a single carriageway. Around 16.5% were recorded in adverse weather such as rain, snow or fog.
The collisions in the SM4 postcode district have produced 2,945 casualties. Pedestrians account for 17.1% 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 221 collisions, Monday 369 collisions, Tuesday 348 collisions, Wednesday 406 collisions, Thursday 373 collisions, Friday 380 collisions, Saturday 316 collisions.
Light conditions
Light conditions: Daylight 1,806 collisions, Darkness 607 collisions.
Road type
Road type: Single carriageway 1,464 collisions, Dual carriageway 541 collisions, Roundabout 249 collisions, One way street 58 collisions, Other 49 collisions, Unknown 38 collisions, Slip road 14 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 174 collisions, 30 mph 2,058 collisions, 40 mph 173 collisions, 50 mph 6 collisions, 60 mph 2 collisions.
Weather at the time
Weather at the time: Fine no high winds 2,015 collisions, Raining no high winds 234 collisions, Unknown 78 collisions, Other 55 collisions, Raining + high winds 11 collisions.
Who was hurt
Who was hurt: Driver or rider 1,830 casualties, Passenger 610 casualties, Pedestrian 505 casualties.
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Recent Accidents
Showing 20 of 2,413 accidents
Accident 2021010338539
SlightAccident 2021010338421
SlightAccident 2021010335924
SlightAccident 2021010334627
SlightAccident 2021010334442
SlightAccident 2021010333781
SeriousAccident 2021010333545
SeriousAccident 2021010331591
SlightAccident 2021010330350
SlightAccident 2021010328196
SlightAccident 2021010328176
SlightAccident 2021010327544
SlightAccident 2021010324511
SlightAccident 2021010324356
SeriousAccident 2021010324189
SeriousAccident 2021010321551
SlightAccident 2021010321141
SlightAccident 2021010318775
SeriousAccident 2021010318405
SlightAccident 2021010317425
SlightFrequently asked questions about road accidents in the SM4 postcode district
How many road accidents have there been in the SM4 postcode district?
2,413 collisions have been recorded in the SM4 postcode district in the STATS19 road safety data between 1999 and 2024, involving 2,945 casualties.
How many of the collisions in the SM4 postcode district were serious or fatal?
16 were fatal and 338 were serious — 14.7% of all recorded collisions in the SM4 postcode district resulted in a death or serious injury.
When do most road accidents happen in the SM4 postcode district?
Wednesday is the most common day for collisions in the SM4 postcode district, accounting for 16.8% of them, and 25.2% of all collisions here happen in darkness.
What kind of roads do collisions in the SM4 postcode district happen on?
60.7% of collisions in the SM4 postcode district are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in the SM4 postcode district?
Pedestrians make up 17.1% of the 2,945 casualties recorded in the SM4 postcode district.
Is road safety in the SM4 postcode district getting better or worse?
Recorded collisions in the SM4 postcode district were broadly unchanged in 2024 compared with 2023.
Where does the road accident data for the SM4 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 SM4 postcode district cover 1999 to 2024.