Serious M25 crash in Hertsmere on 31 March 2021 at 04:49 involving a Mercedes lorry
- Severity
- Serious
- Date
- 31 Mar 2021
- Wednesday, 04:49
- Vehicles
- 1
- Mercedes
- Casualties
- 1
- 1 seriously injured
Location of the crash
Police recorded the crash at latitude 51.71608, longitude -0.27896, in the AL2 postcode district. It is one of the crashes that make up the Shenley, Hertsmere, AL2 1BX area accident hotspot.
Map of where the crash happened in Hertsmere
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- 1 crash
- Serious
Collision details
Basic information
- Reference
- 2021411034106
- Council area
- Hertsmere
- Police force
- Hertfordshire
- Police attended the scene
- Yes
- Highway authority
- Hertfordshire
Road and location details
- First road class
- Motorway
- First road number
- 25
- Road type
- Dual carriageway
- Speed limit
- 70 mph
- Urban or rural
- Rural
- Trunk road
- Trunk road (National Highways)
Junction information
- Junction type
- Not at junction or within 20 metres
Pedestrian crossing information
- Crossing facilities
- No physical crossing facility within 50 m
Environmental conditions
- Light conditions
- Dark, street lights unlit
- Weather
- Fine, no high winds
- Road surface
- Dry
Enhanced collision data
- Serious injury band
- Very 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, 13 metres away, was a slight injury crash on 25 October 2005.
Slight
Car crash on the M25 in Hertsmere, 25 October 2005
13 m awayRef 20054100T3219
Slight
Smart Fortwo crash on the M25 in Hertsmere, 4 May 2016
19 m awayRef 2016410071311
Serious
Mercedes C Class crash on the M25 in Hertsmere, 15 February 2023
20 m awayRef 2023411282691
Slight
Toyota Prius crash on the M25 in Hertsmere, 12 November 2025
20 m awayRef 2025411684372
Slight
Renault Master crash on the M25 in Hertsmere, 7 July 2022
20 m awayRef 2022411204587
Slight
Suzuki Vitara crash on the M25 in Hertsmere, 26 November 2014
21 m awayRef 20144100T3243
Vehicles involved (1)
Vehicle 1: Mercedes
Goods vehicle 7.5 tonnes and over
- Towing and articulation
- Articulated vehicle
- Manoeuvre
- Going ahead
- Travelling from
- West
- Travelling to
- East
- Position at junction
- Not at or within 20 metres of junction
- First point of impact
- Front
- Left-hand drive
- No
- Journey purpose
- Journey as part of work
- Driver sex
- Male
- Driver age
- 67 years
- Engine capacity
- 12,809 cc
- Fuel or propulsion
- Diesel
- Vehicle age
- 2 years
- Driver home area deprivation
- 20 to 30% least deprived
Casualties (1)
Casualty 1: Pedestrian
SeriousMale, aged 28, hit by vehicle 1 (Mercedes)
- Pedestrian location
- In carriageway, not crossing
- Pedestrian movement
- Crossing from driver's nearside
- Serious injury band
- Very serious
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 2021411034106 in the data published on GOV.UK under the Open Government Licence v3.0, and one of the crashes counted in the Hertsmere road accident statistics for 2021.