Skip to main content
CrashStats

Serious A4251 crash in Dacorum on 16 March 2025 at 08:49 involving a Nissan Note

A Nissan Note and a bicycle were involved in a crash on the A4251 in Dacorum at 08:49 on Sunday 16 March 2025. The 59-year-old male cyclist was seriously injured.

It happened in daylight in fine weather on a dry single carriageway with a 30 mph limit, at a T or staggered junction.

Severity
Serious
Date
16 Mar 2025
Sunday, 08:49
Vehicles
2
Nissan Note and bicycle
Casualties
1
1 seriously injured

Location of the crash

Police recorded the crash at latitude 51.76665, longitude -0.58375, in the HP4 postcode district and within the built-up area of Berkhamsted. It is one of the crashes that make up the Northchurch, Dacorum, HP4 3TR area accident hotspot.

Map of where the crash happened in Dacorum

Use the arrow keys to move the map and the plus and minus keys to zoom.

  • 1 crash
  • Serious

Collision details

Basic information

Reference
2025411582767
Council area
Dacorum
Police force
Hertfordshire
Police attended the scene
Yes
Highway authority
Hertfordshire

Road and location details

First road class
A
First road number
4251
Road type
Single carriageway
Speed limit
30 mph
Urban or rural
Urban
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
Daylight
Weather
Fine, no high winds
Road surface
Dry

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, 2 metres away, was a slight injury crash on 13 August 2025.

Vehicles involved (2)

  • Vehicle 1: Nissan Note

    Car

    Manoeuvre
    Turning right
    Travelling from
    North West
    Travelling to
    South West
    Position at junction
    Mid-junction, on roundabout or on main road
    First point of impact
    Front
    Left-hand drive
    No
    Driver sex
    Male
    Driver age
    60 years
    Engine capacity
    1,598 cc
    Fuel or propulsion
    Petrol
    Driver home area deprivation
    40 to 50% most deprived
    Distance from driver's home
    Within 5 km

  • Vehicle 2: Bicycle

    Pedal cycle

    Manoeuvre
    Moving off
    Travelling from
    South East
    Travelling to
    North West
    Position at junction
    Mid-junction, on roundabout or on main road
    First point of impact
    Front
    Left-hand drive
    No
    Driver sex
    Male
    Driver age
    59 years
    Driver home area deprivation
    10% least deprived
    Distance from driver's home
    Within 5 km

Casualties (1)

  • Casualty 1: Cyclist

    Serious

    Male, aged 59, on vehicle 2 (Bicycle)

    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 2025411582767 in the data published on GOV.UK under the Open Government Licence v3.0, and one of the crashes counted in the Dacorum road accident statistics for 2025.