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CrashStats

CM23 road accidents: crash map and statistics

Police recorded 4,180 road traffic collisions in the CM23 postcode district, East Hertfordshire, from 1979 to 2025, and 5,642 people were killed or injured in them. Of those collisions, 58 were fatal and 689 were serious.

In 2025 police recorded 45 collisions, down 18% on 2024 (55).

Collisions since 1979
4,180
826th highest of 2,813 postcode districts
Casualties
5,642
1.35 per collision
Fatal collisions
58
63 people killed
Serious collisions
689
798 seriously injured
Collisions in 2025
45
Down 18% on 2024
Casualties in 2025
57
Down 17% on 2024

Road collision statistics for CM23

Collisions by severity, 1979 to 2025

  • Fatal581.4%
  • Serious68916%
  • Slight3,43382%

What the data shows

  • CM23 had 547 collisions from 2016 to 2025, 24% fewer than the 720 from 2006 to 2015.
  • 18% of collisions in CM23 were fatal or serious, against 20% across Great Britain.
  • 623 children under 16 were killed or injured in CM23, 11% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 37% of collisions in CM23.

Where CM23 ranks among 2,813 postcode districts

Most collisions
826th
Most casualties
798th
Most fatal collisions
978th
Most serious collisions
970th

Collisions by day of the week

  • Monday580 (14%)
  • Tuesday569 (14%)
  • Wednesday568 (14%)
  • Thursday640 (15%)
  • Friday742 (18%)
  • Saturday651 (16%)
  • Sunday430 (10%)

Light conditions

  • Daylight3,044 (73%)
  • Dark, street lights lit818 (20%)
  • Dark, no street lighting235 (5.6%)
  • Dark, lighting unknown56 (1.3%)
  • Dark, street lights unlit27 (0.6%)

Type of road

  • Single carriageway3,059 (73%)
  • Roundabout468 (11%)
  • Dual carriageway336 (8%)
  • One way street or slip road301 (7.2%)
  • Not recorded16 (0.4%)

Speed limit at the scene

  • 20 mph33 (0.8%)
  • 30 mph2,512 (60%)
  • 40 mph265 (6.3%)
  • 50 mph107 (2.6%)
  • 60 mph895 (21%)
  • 70 mph368 (8.8%)

Weather at the time

  • Fine, no high winds3,275 (78%)
  • Raining, no high winds591 (14%)
  • Fine with high winds48 (1.1%)
  • Raining with high winds44 (1.1%)
  • Fog or mist38 (0.9%)
  • Snowing, no high winds19 (0.5%)
  • Snowing with high winds5 (0.1%)
  • Other84 (2%)
  • Not recorded76 (1.8%)

Who was hurt

  • Car occupant3,539 (63%)
  • Pedestrian769 (14%)
  • Motorcyclist614 (11%)
  • Cyclist389 (6.9%)
  • Van occupant162 (2.9%)
  • Goods vehicle occupant (over 3.5 tonnes)62 (1.1%)
  • Bus or coach occupant35 (0.6%)
  • Taxi or private hire car occupant33 (0.6%)
  • Minibus occupant19 (0.3%)
  • Other vehicle occupant11 (0.2%)
  • Other7 (0.1%)
  • Not recorded2 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

CM23 road accidents by year

Collisions and casualties in CM23, 1979 to 2025

Collisions in CM23 peaked at 138 in 2001; 2025 had 45.

  • Collisions
  • Collisions in 2025: 45
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254557
20245569
20236586
20224263
20215785
20204055
20196994
20186187
20175781
20165686
20157194
20147792
20134462
20127083
20115873
20105880
20096999
200879103
200794132
2006100134
200595141
200493126
2003113153
200291131
2001138186
2000120165
1999115156
1998117162
1997103135
199682119
1995120164
199495140
1993123155
199286114
1991116152
1990118160
1989123173
1988117154
1987120156
1986102132
1985110141
1984110159
1983106137
1982112150
198184102
198099126
1979105138

Map of recent crashes in CM23

Map of the 24 most recent crashes in CM23

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in CM23

The 24 most recent collisions in CM23 happened between 8 July and 27 December 2025.

Severity

Crashes by road in CM23

The A1184 has the most collisions in CM23, 612 of 4,180 (15%), followed by the A120 (489).

Collisions in CM23 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA118461288611121
2ndA1204897251068
3rdA1250472585570
4thB13834525971082
5thM11371552945
6thB1004252333449
7thA1059247302035
8thA10609211929
9thB15296783012

Council areas covering CM23

Collisions in CM23 were recorded in 7 council areas. East Hertfordshire has 3,092 of 4,180 (74%).

Collisions in CM23 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stEast Hertfordshire3,0924,09339512
2ndUttlesford1,0621,51319171
3rdEpping Forest7900
4thNorth Hertfordshire5502
5thBraintree3501
6thBroxbourne3400
7thHarlow3502

Towns in CM23

Collisions in CM23 were recorded in 3 towns, led by Bishop's Stortford (2,617) and Spellbrook (100).