SL1 postcode district road traffic accidents
The SL1 postcode district recorded 7,047 collisions in the STATS19 data between 1999 and 2024, involving 9,087 casualties. Of these collisions, 53 were fatal and 764 were serious. Recorded collisions in 2024 were down 11% on 2023.
Severity Breakdown
- Fatal
- 53
- Serious
- 764
- Casualties
- 9,087
- Fatal
- 53
- Serious
- 764
- Casualties
- 9,087
Collisions by Year
Areas covering SL1
Towns in SL1
Roads in SL1
Accidents in the SL1 postcode district
Road collision statistics for the SL1 postcode district
Collisions recorded
7,047
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
9,087
Casualties recorded across every collision in this area.
Fatal collisions
53
Collisions in which at least one person died.
Serious collisions
764
11.6% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in the SL1 postcode district
Collisions in the SL1 postcode district are most frequently recorded on a Friday (17.2% of the total), with 28.2% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
61% of recorded collisions in the SL1 postcode district happen on a single carriageway. Around 14.3% were recorded in adverse weather such as rain, snow or fog.
The collisions in the SL1 postcode district have produced 9,087 casualties. Pedestrians account for 13.7% 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 712 collisions, Monday 1,020 collisions, Tuesday 1,101 collisions, Wednesday 1,069 collisions, Thursday 1,025 collisions, Friday 1,211 collisions, Saturday 909 collisions.
Light conditions
Light conditions: Daylight 5,061 collisions, Darkness 1,986 collisions.
Road type
Road type: Single carriageway 4,296 collisions, Dual carriageway 1,762 collisions, Roundabout 717 collisions, One way street 129 collisions, Slip road 74 collisions, Other 62 collisions, Unknown 7 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 100 collisions, 30 mph 4,944 collisions, 40 mph 1,075 collisions, 50 mph 42 collisions, 60 mph 196 collisions, 70 mph 690 collisions.
Weather at the time
Weather at the time: Fine no high winds 5,977 collisions, Raining no high winds 695 collisions, Other 134 collisions, Unknown 84 collisions, Fine + high winds 65 collisions.
Who was hurt
Who was hurt: Driver or rider 5,882 casualties, Passenger 1,963 casualties, Pedestrian 1,242 casualties.
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Recent Accidents
Showing 20 of 7,047 accidents
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SlightFrequently asked questions about road accidents in the SL1 postcode district
How many road accidents have there been in the SL1 postcode district?
7,047 collisions have been recorded in the SL1 postcode district in the STATS19 road safety data between 1999 and 2024, involving 9,087 casualties.
How many of the collisions in the SL1 postcode district were serious or fatal?
53 were fatal and 764 were serious — 11.6% of all recorded collisions in the SL1 postcode district resulted in a death or serious injury.
When do most road accidents happen in the SL1 postcode district?
Friday is the most common day for collisions in the SL1 postcode district, accounting for 17.2% of them, and 28.2% of all collisions here happen in darkness.
What kind of roads do collisions in the SL1 postcode district happen on?
61% of collisions in the SL1 postcode district are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in the SL1 postcode district?
Pedestrians make up 13.7% of the 9,087 casualties recorded in the SL1 postcode district.
Is road safety in the SL1 postcode district getting better or worse?
Recorded collisions in the SL1 postcode district fell 11% in 2024 compared with 2023, though year-on-year figures move with both genuine risk and changes in reporting.
Where does the road accident data for the SL1 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 SL1 postcode district cover 1999 to 2024.