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CrashStats

Serious A4 crash in Windsor and Maidenhead on 20 December 2025 at 16:40 involving a Mercedes C Class

A Mercedes C Class and a Honda CBR motorcycle were involved in a crash on the A4 in Windsor and Maidenhead at 16:40 on Saturday 20 December 2025. The 34-year-old male rider of the Honda CBR motorcycle was seriously injured.

It happened after dark under street lighting in fine weather on a wet single carriageway with a 40 mph limit, at a T or staggered junction.

Severity
Serious
Date
20 Dec 2025
Saturday, 16:40
Vehicles
2
Mercedes C Class and Honda CBR
Casualties
1
1 seriously injured

Location of the crash

Police recorded the crash at latitude 51.51027, longitude -0.81209, in the RG10 postcode district.

Map of where the crash happened in Windsor and Maidenhead

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  • 1 crash
  • Serious

Collision details

Basic information

Reference
2025430645382
Council area
Windsor and Maidenhead
Police force
Thames Valley
Police attended the scene
Yes

Road and location details

First road class
A
First road number
4
Road type
Single carriageway
Speed limit
40 mph
Urban or rural
Rural
Trunk road
Non-trunk road

Junction information

Junction type
T or staggered junction
Junction control
Give way or uncontrolled
Second road class
Unclassified

Pedestrian crossing information

Crossing facilities
No physical crossing facility within 50 m

Environmental conditions

Light conditions
Dark, street lights lit
Weather
Fine, no high winds
Road surface
Wet or damp

Enhanced collision data

Serious injury band
Moderately serious
How severity was recorded
From injuries recorded by police (CRASH system)
Estimated chance it was serious
100%
Estimated chance it was slight
0%

The 6 nearest recorded crashes

The nearest, 6 metres away, was a slight injury crash on 1 April 2000.

Vehicles involved (2)

  • Vehicle 1: Mercedes C Class

    Car

    Manoeuvre
    Turning right
    Travelling from
    South
    Travelling to
    East
    Position at junction
    Mid-junction, on roundabout or on main road
    First point of impact
    Offside
    Left-hand drive
    No
    Journey purpose
    Personal business or leisure
    Driver sex
    Male
    Driver age
    64 years
    Engine capacity
    2,143 cc
    Fuel or propulsion
    Diesel
    Driver home area deprivation
    10% least deprived
    Distance from driver's home
    Within 5 km

  • Vehicle 2: Honda CBR

    Motorcycle over 500cc

    Manoeuvre
    Going ahead
    Travelling from
    North East
    Travelling to
    South
    Position at junction
    Approaching junction or waiting or parked at junction approach
    First point of impact
    Front
    Journey purpose
    Commuting to or from work
    Driver sex
    Male
    Driver age
    34 years
    Engine capacity
    649 cc
    Fuel or propulsion
    Petrol
    Driver home area deprivation
    10% least deprived
    Distance from driver's home
    Within 5 km

Casualties (1)

  • Casualty 1: Rider

    Serious

    Male, aged 34, motorcyclist (over 500cc), on vehicle 2 (Honda CBR)

    Serious injury band
    Moderately serious
    Home area deprivation
    10% least deprived
    Distance from home
    Within 5 km

Data source

This record comes from the Department for Transport’s road safety data (STATS19), in which police forces in Great Britain record every road crash reported to them where someone was injured. It is reference 2025430645382 in the data published on GOV.UK under the Open Government Licence v3.0, and one of the crashes counted in the Windsor and Maidenhead road accident statistics for 2025.