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CrashStats

EN6 road accidents: crash map and statistics

Police recorded 6,566 road traffic collisions in the EN6 postcode district, Hertsmere, from 1979 to 2025, and 9,299 people were killed or injured in them. Of those collisions, 73 were fatal and 1,013 were serious.

In 2025 police recorded 58 collisions, down 22% on 2024 (74).

Collisions since 1979
6,566
234th highest of 2,813 postcode districts
Casualties
9,299
1.42 per collision
Fatal collisions
73
75 people killed
Serious collisions
1,013
1,212 seriously injured
Collisions in 2025
58
Down 22% on 2024
Casualties in 2025
80
Down 26% on 2024

Road collision statistics for EN6

Collisions by severity, 1979 to 2025

  • Fatal731.1%
  • Serious1,01315%
  • Slight5,48083%

What the data shows

  • EN6 had 784 collisions from 2016 to 2025, 37% fewer than the 1,250 from 2006 to 2015.
  • 17% of collisions in EN6 were fatal or serious, against 20% across Great Britain.
  • 697 children under 16 were killed or injured in EN6, 7.7% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 35% of collisions in EN6.

Where EN6 ranks among 2,813 postcode districts

Most collisions
234th
Most casualties
182nd
Most fatal collisions
622nd
Most serious collisions
378th

Collisions by day of the week

  • Monday922 (14%)
  • Tuesday919 (14%)
  • Wednesday911 (14%)
  • Thursday1,006 (15%)
  • Friday1,172 (18%)
  • Saturday907 (14%)
  • Sunday729 (11%)

Light conditions

  • Daylight4,674 (71%)
  • Dark, street lights lit1,409 (21%)
  • Dark, no street lighting404 (6.2%)
  • Dark, lighting unknown50 (0.8%)
  • Dark, street lights unlit29 (0.4%)

Type of road

  • Single carriageway3,637 (55%)
  • Dual carriageway2,104 (32%)
  • Roundabout418 (6.4%)
  • One way street or slip road381 (5.8%)
  • Not recorded26 (0.4%)

Speed limit at the scene

  • 20 mph13 (0.2%)
  • 30 mph2,882 (44%)
  • 40 mph206 (3.1%)
  • 50 mph134 (2%)
  • 60 mph993 (15%)
  • 70 mph2,338 (36%)

Weather at the time

  • Fine, no high winds5,224 (80%)
  • Raining, no high winds921 (14%)
  • Raining with high winds87 (1.3%)
  • Fine with high winds83 (1.3%)
  • Fog or mist55 (0.8%)
  • Snowing, no high winds42 (0.6%)
  • Snowing with high winds2 (under 0.1%)
  • Other107 (1.6%)
  • Not recorded45 (0.7%)

Who was hurt

  • Car occupant6,879 (74%)
  • Motorcyclist680 (7.3%)
  • Pedestrian585 (6.3%)
  • Van occupant362 (3.9%)
  • Cyclist299 (3.2%)
  • Goods vehicle occupant (over 3.5 tonnes)228 (2.5%)
  • Bus or coach occupant169 (1.8%)
  • Taxi or private hire car occupant30 (0.3%)
  • Other vehicle occupant27 (0.3%)
  • Minibus occupant25 (0.3%)
  • Other9 (0.1%)
  • Not recorded6 (0.1%)

Source: Department for Transport, STATS19 road safety data

EN6 road accidents by year

Collisions and casualties in EN6, 1979 to 2025

Collisions in EN6 peaked at 253 in 1995; 2025 had 58.

  • Collisions
  • Collisions in 2025: 58
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20255880
202474108
20236488
202284121
202172110
20206099
201975107
201889139
201789118
2016119187
2015111141
2014117269
2013101141
2012107155
2011112170
2010111164
2009125189
2008116156
2007169258
2006181268
2005172247
2004167253
2003162248
2002197325
2001174240
2000196281
1999199279
1998194291
1997221308
1996223280
1995253340
1994157200
1993189264
1992171225
1991176233
1990214280
1989198273
1988176231
1987182232
1986193252
1985180214
1984192259
1983143186
1982189267
198147
1980611
197945

Map of recent crashes in EN6

Map of the 24 most recent crashes in EN6

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in EN6

The 24 most recent collisions in EN6 happened between 4 July and 26 December 2025.

Severity

Crashes by road in EN6

The M25 has the most collisions in EN6, 1,945 of 6,566 (30%), followed by the A1000 (659).

Collisions in EN6 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stM251,9452,91117222
2ndA100065988710115
3rdB556518718395
4thA1114595941076
5thB156424591383
6thA1308442020
7thA1(M)258393443
8thB157156231130
9thA1005105157123
10thA108186237216
11thA6619668
12thB197294605
13thA121273206
14thA11787803
15thM16800
16thA10554401
17thA1564400
18thA253401
19thA4113600

Council areas covering EN6

Collisions in EN6 were recorded in 8 council areas. Hertsmere has 5,103 of 6,566 (78%).

Collisions in EN6 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stHertsmere5,1037,20255720
2ndWelwyn Hatfield9151,32310195
3rdEnfield377552669
4thBroxbourne100133217
5thBarnet5265010
6thHavering4400
7thEast Hertfordshire3600
8thSt Albans3400

Towns in EN6

Collisions in EN6 were recorded in 4 towns, led by Potters Bar (2,004) and Cuffley (362).