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CrashStats

CM20 road accidents: crash map and statistics

Police recorded 3,767 road traffic collisions in the CM20 postcode district, Harlow, from 1979 to 2025, and 4,796 people were killed or injured in them. Of those collisions, 57 were fatal and 734 were serious.

In 2025 police recorded 49 collisions, down 14% on 2024 (57).

Collisions since 1979
3,767
967th highest of 2,813 postcode districts
Casualties
4,796
1.27 per collision
Fatal collisions
57
62 people killed
Serious collisions
734
800 seriously injured
Collisions in 2025
49
Down 14% on 2024
Casualties in 2025
63
Down 7% on 2024

Road collision statistics for CM20

Collisions by severity, 1979 to 2025

  • Fatal571.5%
  • Serious73419%
  • Slight2,97679%

What the data shows

  • CM20 had 515 collisions from 2016 to 2025, 14% fewer than the 596 from 2006 to 2015.
  • 21% of collisions in CM20 were fatal or serious, against 20% across Great Britain.
  • 586 children under 16 were killed or injured in CM20, 13% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 32% of collisions in CM20.

Where CM20 ranks among 2,813 postcode districts

Most collisions
967th
Most casualties
1,058th
Most fatal collisions
1,003rd
Most serious collisions
879th

Collisions by day of the week

  • Monday551 (15%)
  • Tuesday554 (15%)
  • Wednesday553 (15%)
  • Thursday583 (15%)
  • Friday663 (18%)
  • Saturday543 (14%)
  • Sunday320 (8.5%)

Light conditions

  • Daylight2,745 (73%)
  • Dark, street lights lit890 (24%)
  • Dark, no street lighting78 (2.1%)
  • Dark, lighting unknown36 (1%)
  • Dark, street lights unlit18 (0.5%)

Type of road

  • Single carriageway2,559 (68%)
  • Roundabout630 (17%)
  • Dual carriageway428 (11%)
  • One way street or slip road112 (3%)
  • Not recorded38 (1%)

Speed limit at the scene

  • 10 mph2 (0.1%)
  • 20 mph47 (1.2%)
  • 30 mph1,246 (33%)
  • 40 mph1,876 (50%)
  • 50 mph72 (1.9%)
  • 60 mph408 (11%)
  • 70 mph115 (3.1%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds2,997 (80%)
  • Raining, no high winds506 (13%)
  • Fine with high winds45 (1.2%)
  • Raining with high winds45 (1.2%)
  • Fog or mist26 (0.7%)
  • Snowing, no high winds17 (0.5%)
  • Snowing with high winds3 (0.1%)
  • Other97 (2.6%)
  • Not recorded31 (0.8%)

Who was hurt

  • Car occupant2,571 (54%)
  • Pedestrian810 (17%)
  • Motorcyclist693 (14%)
  • Cyclist394 (8.2%)
  • Bus or coach occupant104 (2.2%)
  • Van occupant94 (2%)
  • Taxi or private hire car occupant43 (0.9%)
  • Minibus occupant32 (0.7%)
  • Goods vehicle occupant (over 3.5 tonnes)30 (0.6%)
  • Other vehicle occupant15 (0.3%)
  • Other5 (0.1%)
  • Not recorded5 (0.1%)

Source: Department for Transport, STATS19 road safety data

CM20 road accidents by year

Collisions and casualties in CM20, 1979 to 2025

Collisions in CM20 peaked at 127 in 1988; 2025 had 49.

  • Collisions
  • Collisions in 2025: 49
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254963
20245768
20234760
20225264
20214763
20203945
20194857
20186382
20174457
20166989
20156174
20145666
20134452
20125867
201177102
20105668
20095669
20084861
20077497
20066685
200581103
200478103
200383103
200295127
200189111
200096112
199986113
1998104145
1997101132
1996119161
1995106140
1994103137
199397122
1992107137
199179109
199089110
1989124155
1988127159
198794111
198692119
1985100123
1984108138
1983101132
1982103136
198194118
1980105130
197995121

Map of recent crashes in CM20

Map of the 24 most recent crashes in CM20

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in CM20

The 24 most recent collisions in CM20 happened between 25 July and 27 December 2025.

Severity

Crashes by road in CM20

The A414 has the most collisions in CM20, 760 of 3,767 (20%), followed by the A1019 (298).

Collisions in CM20 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA4147601,03213148
2ndA1019298388554
3rdA1025158200121
4thA1169112152330
5thA118491130622
6thB1833400

Council areas covering CM20

Collisions in CM20 were recorded in 3 council areas. Harlow has 3,463 of 3,767 (92%).

Collisions in CM20 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stHarlow3,4634,31946677
2ndEast Hertfordshire2944641155
3rdEpping Forest71002

Town in CM20

Of the 3,767 collisions in CM20, 2,617 (69%) were in Harlow.