SO21 postcode district road traffic accidents
The SO21 postcode district recorded 2,911 collisions in the STATS19 data between 1999 and 2024, involving 4,125 casualties. Of these collisions, 66 were fatal and 565 were serious. Recorded collisions in 2024 were up 1% on 2023.
Severity Breakdown
- Fatal
- 66
- Serious
- 565
- Casualties
- 4,125
- Fatal
- 66
- Serious
- 565
- Casualties
- 4,125
Collisions by Year
Areas covering SO21
Towns in SO21
Roads in SO21
Accidents in the SO21 postcode district
Road collision statistics for the SO21 postcode district
Collisions recorded
2,911
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
4,125
Casualties recorded across every collision in this area.
Fatal collisions
66
Collisions in which at least one person died.
Serious collisions
565
21.7% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in the SO21 postcode district
Collisions in the SO21 postcode district are most frequently recorded on a Friday (18.2% of the total), with 27.6% happening in darkness rather than daylight. The most common posted speed limit at the scene is 70 mph.
47.2% of recorded collisions in the SO21 postcode district happen on a single carriageway. Around 16% were recorded in adverse weather such as rain, snow or fog.
The collisions in the SO21 postcode district have produced 4,125 casualties. Pedestrians account for 2.2% 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 358 collisions, Monday 394 collisions, Tuesday 414 collisions, Wednesday 441 collisions, Thursday 406 collisions, Friday 530 collisions, Saturday 368 collisions.
Light conditions
Light conditions: Daylight 2,107 collisions, Darkness 804 collisions.
Road type
Road type: Single carriageway 1,374 collisions, Dual carriageway 1,341 collisions, Roundabout 105 collisions, Slip road 81 collisions, Unknown 6 collisions, Other 3 collisions, One way street 1 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 2 collisions, 30 mph 336 collisions, 40 mph 242 collisions, 50 mph 85 collisions, 60 mph 910 collisions, 70 mph 1,336 collisions.
Weather at the time
Weather at the time: Fine no high winds 2,408 collisions, Raining no high winds 317 collisions, Raining + high winds 62 collisions, Other 48 collisions, Fine + high winds 38 collisions.
Who was hurt
Who was hurt: Driver or rider 2,927 casualties, Passenger 1,107 casualties, Pedestrian 91 casualties.
Move Insights
Thinking of moving to this area?
Check flood risk, planning history, EPC ratings and more with a Move Insights property report.
Recent Accidents
Showing 20 of 2,911 accidents
Accident 2018440108146
SlightAccident 2018440102506
SlightAccident 2018440102165
SlightAccident 2018440096648
FatalAccident 2018440090097
SlightAccident 2018440086979
SlightAccident 2018440075034
FatalAccident 2018440067558
SlightAccident 2018440066929
SlightAccident 2018440064973
SlightAccident 2018440060704
SlightAccident 2018440049481
SlightAccident 2018440047812
SeriousAccident 2018440044841
SlightAccident 2018440034799
SlightAccident 2018440032142
SeriousAccident 2018440030950
SlightAccident 2018440021289
SlightAccident 2018440016679
SeriousAccident 2018440011567
SeriousFrequently asked questions about road accidents in the SO21 postcode district
How many road accidents have there been in the SO21 postcode district?
2,911 collisions have been recorded in the SO21 postcode district in the STATS19 road safety data between 1999 and 2024, involving 4,125 casualties.
How many of the collisions in the SO21 postcode district were serious or fatal?
66 were fatal and 565 were serious — 21.7% of all recorded collisions in the SO21 postcode district resulted in a death or serious injury.
When do most road accidents happen in the SO21 postcode district?
Friday is the most common day for collisions in the SO21 postcode district, accounting for 18.2% of them, and 27.6% of all collisions here happen in darkness.
What kind of roads do collisions in the SO21 postcode district happen on?
47.2% of collisions in the SO21 postcode district are recorded on a single carriageway, most often where the limit is 70 mph.
Are pedestrians often hurt in collisions in the SO21 postcode district?
Pedestrians make up 2.2% of the 4,125 casualties recorded in the SO21 postcode district.
Is road safety in the SO21 postcode district getting better or worse?
Recorded collisions in the SO21 postcode district rose 1% in 2024 compared with 2023. 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 SO21 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 SO21 postcode district cover 1999 to 2024.