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CrashStats

WD6 road accidents: crash map and statistics

Police recorded 5,531 road traffic collisions in the WD6 postcode district, Hertsmere, from 1981 to 2025, and 7,177 people were killed or injured in them. Of those collisions, 62 were fatal and 892 were serious.

In 2025 police recorded 61 collisions, down 13% on 2024 (70).

Collisions since 1981
5,531
419th highest of 2,813 postcode districts
Casualties
7,177
1.30 per collision
Fatal collisions
62
66 people killed
Serious collisions
892
1,007 seriously injured
Collisions in 2025
61
Down 13% on 2024
Casualties in 2025
75
Down 9% on 2024

Road collision statistics for WD6

Collisions by severity, 1981 to 2025

  • Fatal621.1%
  • Serious89216%
  • Slight4,57783%

What the data shows

  • WD6 had 758 collisions from 2016 to 2025, 24% fewer than the 1,002 from 2006 to 2015.
  • 17% of collisions in WD6 were fatal or serious, against 20% across Great Britain.
  • 772 children under 16 were killed or injured in WD6, 11% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 35% of collisions in WD6.

Where WD6 ranks among 2,813 postcode districts

Most collisions
419th
Most casualties
449th
Most fatal collisions
879th
Most serious collisions
554th

Collisions by day of the week

  • Monday838 (15%)
  • Tuesday832 (15%)
  • Wednesday819 (15%)
  • Thursday842 (15%)
  • Friday918 (17%)
  • Saturday721 (13%)
  • Sunday561 (10%)

Light conditions

  • Daylight3,875 (70%)
  • Dark, street lights lit1,470 (27%)
  • Dark, no street lighting102 (1.8%)
  • Dark, lighting unknown50 (0.9%)
  • Dark, street lights unlit34 (0.6%)

Type of road

  • Single carriageway3,957 (72%)
  • Dual carriageway799 (14%)
  • Roundabout633 (11%)
  • One way street or slip road107 (1.9%)
  • Not recorded35 (0.6%)

Speed limit at the scene

  • 20 mph21 (0.4%)
  • 30 mph3,787 (68%)
  • 40 mph405 (7.3%)
  • 50 mph153 (2.8%)
  • 60 mph604 (11%)
  • 70 mph561 (10%)

Weather at the time

  • Fine, no high winds4,363 (79%)
  • Raining, no high winds809 (15%)
  • Fine with high winds49 (0.9%)
  • Fog or mist46 (0.8%)
  • Raining with high winds43 (0.8%)
  • Snowing, no high winds35 (0.6%)
  • Snowing with high winds8 (0.1%)
  • Other136 (2.5%)
  • Not recorded42 (0.8%)

Who was hurt

  • Car occupant4,517 (63%)
  • Motorcyclist942 (13%)
  • Pedestrian872 (12%)
  • Cyclist380 (5.3%)
  • Van occupant172 (2.4%)
  • Bus or coach occupant167 (2.3%)
  • Goods vehicle occupant (over 3.5 tonnes)51 (0.7%)
  • Taxi or private hire car occupant36 (0.5%)
  • Other vehicle occupant20 (0.3%)
  • Minibus occupant12 (0.2%)
  • Other4 (0.1%)
  • Not recorded4 (0.1%)

Source: Department for Transport, STATS19 road safety data

WD6 road accidents by year

Collisions and casualties in WD6, 1981 to 2025

Collisions in WD6 peaked at 201 in 1986; 2025 had 61.

  • Collisions
  • Collisions in 2025: 61
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20256175
20247082
202379103
202273110
20215676
20207299
20197596
201884100
201791113
201697122
201591119
201484101
2013103136
2012101134
2011105147
2010100132
2009100119
200894121
2007119153
2006105137
2005107159
2004127171
2003117147
2002127178
2001153245
2000136179
1999161198
1998160208
1997148194
1996166210
1995158198
1994184215
1993132183
1992153201
1991150206
1990162217
1989196239
1988157203
1987185236
1986201242
1985161198
1984170214
1983169200
1982190260
198111

Map of recent crashes in WD6

Map of the 24 most recent crashes in WD6

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in WD6

The 24 most recent collisions in WD6 happened between 29 July and 30 December 2025.

Severity

Crashes by road in WD6

The A1 has the most collisions in WD6, 709 of 5,531 (13%), followed by the A411 (568).

Collisions in WD6 on each road, 1981 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA170997115113
2ndA4115688296119
3rdA5135537655374
4thB5378481607460
5thA5183379532865
6thA41217269545
7thM1146201316
8thA5106128219

Council areas covering WD6

Collisions in WD6 were recorded in 4 council areas. Hertsmere has 4,489 of 5,531 (81%).

Collisions in WD6 by council area, 1981 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stHertsmere4,4895,87848725
2ndBarnet9891,23413156
3rdHarrow3946110
4thWelwyn Hatfield5600

Towns in WD6

Collisions in WD6 were recorded in 3 towns, led by Borehamwood (3,280) and Elstree (441).