Serious Mercedes A Class and Audi A3 crash on the A4146 - 23 Dec 2025
Accident reference 2025411690401
Accident summary
On Tuesday 23 December 2025 at 18:25 a serious collision occurred near A4146 involving 2 vehicles (mercedes a class, audi a3) and 2 casualties (1 serious, 1 slight) Weather at the time was recorded as raining 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: 50 mph
- Road type: Single carriageway
- 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 UK road closures.
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Basic Information
| Accident Reference | 2025411690401 |
| Police Reference | 411690401 |
| Date & Time |
Tuesday
|
| Severity | Serious |
| Vehicles Involved | 2 |
| Casualties | 2 |
| Police Force | Hertfordshire |
| Police Officer Attended | Yes |
Road & Location Details
| Area Type | Rural |
| First Road | A4146 |
| Second Road | Unclassified road |
| Road Type | Single carriageway |
| Speed Limit | 50 mph |
| Trunk Road | Yes |
| Highway Authority | E10000015 |
| Current Highway Authority | E10000015 |
| LSOA Code | E01023399 |
Environmental Conditions
| Light Conditions | Darkness - lights lit |
| Weather Conditions | Raining 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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SlightVehicles (2)
Vehicle 1
Vehicle Information
| Type | Car |
| Make/Model | MERCEDES A CLASS |
| Engine Capacity | 1595cc |
| Fuel Type | Petrol |
| Left Hand Drive | Yes |
| Manoeuvre | Going ahead |
Driver Information
| Age | 30 |
| Sex | Female |
| Journey Purpose | Not known |
| IMD Decile | 3 (1=most deprived, 10=least deprived) |
Vehicle 2
Vehicle Information
| Type | Car |
| Make/Model | AUDI A3 |
| Engine Capacity | 999cc |
| Fuel Type | Petrol |
| Left Hand Drive | Yes |
| Manoeuvre | Going ahead |
Driver Information
| Age | 21 |
| Sex | Female |
| Journey Purpose | Not known |
| IMD Decile | 7 (1=most deprived, 10=least deprived) |
Casualties (2)
Casualty 1
Basic Information
| Class | Driver or rider |
| Severity | Serious |
| Type | Car occupant |
| Age | 30 |
| Sex | Female |
| Associated Vehicle | Vehicle 1 |
Additional Details
| IMD Decile | 3 (1=most deprived, 10=least deprived) |
Casualty 2
Basic Information
| Class | Driver or rider |
| Severity | Slight |
| Type | Car occupant |
| Age | 21 |
| Sex | Female |
| Associated Vehicle | Vehicle 2 |
Additional Details
| IMD Decile | 7 (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.