Serious Toyota Prius crash on the M4 in Swansea - 15 Dec 2025
Accident reference 2025622600274
Accident summary
On Monday 15 December 2025 at 16:37 a serious collision occurred near M4, A4067, Swansea involving 2 vehicles (toyota prius, van / goods 3.5 tonnes mgw or under) and 2 casualties (1 serious, 1 slight) Weather at the time was recorded as fine no high winds. Road surface conditions were wet or damp. Lighting was described as darkness - no lighting. A police officer attended the scene.
Key details
- Posted speed limit: 30 mph
- Road type: Slip road
- Setting: Urban
Location
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Basic Information
| Accident Reference | 2025622600274 |
| Police Reference | 622600274 |
| Date & Time |
Monday
|
| Severity | Serious |
| Vehicles Involved | 2 |
| Casualties | 2 |
| Police Force | South Wales |
| Police Officer Attended | Yes |
Road & Location Details
Junction Information
| Junction Control | Auto traffic signal |
Environmental Conditions
| Light Conditions | Darkness - no lighting |
| Weather Conditions | Fine no high winds |
| Road Surface Conditions | Wet or damp |
| Carriageway Hazards | None |
Enhanced Collision Data
| Injury Based Classification | Yes |
| Adjusted Serious Casualties | 1 |
| Adjusted Slight Casualties | 0 |
Nearby or similar collisions
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SlightVehicles (2)
Vehicle 2
Vehicle Information
| Type | Taxi/Private hire car |
| Make/Model | TOYOTA PRIUS |
| Engine Capacity | 1797cc |
| Fuel Type | Hybrid electric |
| Left Hand Drive | Yes |
| Manoeuvre | Moving off |
Driver Information
| Sex | Unknown |
| Journey Purpose | Personal business or leisure |
Vehicle 1
Vehicle Information
| Type | Van / Goods 3.5 tonnes mgw or under |
| Left Hand Drive | Yes |
| Manoeuvre | Turning right |
Driver Information
| Sex | Unknown |
| Journey Purpose | Not known |
Casualties (2)
Casualty 2
Basic Information
| Class | Passenger |
| Severity | Serious |
| Type | Van / Goods vehicle (3.5 tonnes mgw or under) occupant |
| Age | 36 |
| Sex | Female |
| Associated Vehicle | Vehicle 1 |
Additional Details
| Car Passenger | Front seat passenger |
| IMD Decile | 1 (1=most deprived, 10=least deprived) |
Casualty 1
Basic Information
| Class | Passenger |
| Severity | Slight |
| Type | Van / Goods vehicle (3.5 tonnes mgw or under) occupant |
| Age | 23 |
| Sex | Female |
| Associated Vehicle | Vehicle 1 |
Additional Details
| Car Passenger | Rear seat passenger |
| IMD Decile | 1 (1=most deprived, 10=least deprived) |
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Data Source
This data is from the UK Department for Transport's STATS19 road safety dataset, available under the Open Government Licence v3.0.