Serious Mercedes C Class and Honda Cbr crash on the A4 in Windsor and Maidenhead - 20 Dec 2025
Accident reference 2025430645382
Accident summary
On Saturday 20 December 2025 at 16:40 a serious collision occurred near A4, Windsor and Maidenhead involving 2 vehicles (mercedes c class, honda cbr) and 1 casualty (1 serious) Weather at the time was recorded as fine no high winds. Road surface conditions were wet or damp. Lighting was described as darkness - lights lit. A police officer attended the scene.
Key details
- Posted speed limit: 40 mph
- Road type: Single carriageway
- Junction: T or staggered junction
- Setting: Rural
Location
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Collision records on this page come from the Department for Transport's STATS19 data, which is published once a year, so a crash from today will not appear in the historical data yet. For today's incidents, check live A4 closures today.
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Basic Information
| Accident Reference | 2025430645382 |
| Police Reference | 430645382 |
| Date & Time |
Saturday
|
| Severity | Serious |
| Vehicles Involved | 2 |
| Casualties | 1 |
| Police Force | Thames Valley |
| Police Officer Attended | Yes |
Road & Location Details
| Area Type | Rural |
| First Road | A4 |
| Second Road | Unclassified road |
| Road Type | Single carriageway |
| Speed Limit | 40 mph |
| Trunk Road | Yes |
| Highway Authority | E06000040 |
| Current Highway Authority | E06000040 |
| LSOA Code | E01016581 |
Junction Information
| Junction Detail | T or staggered junction |
| Junction Control | Give way or uncontrolled |
Environmental Conditions
| Light Conditions | Darkness - lights lit |
| 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 |
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SeriousVehicles (2)
Vehicle 1
Vehicle Information
| Type | Car |
| Make/Model | MERCEDES C CLASS |
| Engine Capacity | 2143cc |
| Fuel Type | Heavy oil |
| Left Hand Drive | Yes |
| Manoeuvre | Turning right |
Driver Information
| Age | 64 |
| Sex | Male |
| Journey Purpose | Personal business or leisure |
| IMD Decile | 10 (1=most deprived, 10=least deprived) |
Vehicle 2
Vehicle Information
| Type | Motorcycle over 500cc |
| Make/Model | HONDA CBR |
| Engine Capacity | 649cc |
| Fuel Type | Petrol |
| Manoeuvre | Going ahead |
Driver Information
| Age | 34 |
| Sex | Male |
| Journey Purpose | Commuting to/from work |
| IMD Decile | 10 (1=most deprived, 10=least deprived) |
Casualties (1)
Casualty 1
Basic Information
| Class | Driver or rider |
| Severity | Serious |
| Type | Motorcycle over 500cc rider or passenger |
| Age | 34 |
| Sex | Male |
| Associated Vehicle | Vehicle 2 |
Additional Details
| IMD Decile | 10 (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.