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CrashStats

Dacorum road accidents in 2020: crash map and statistics

Police recorded 143 road traffic collisions in Dacorum in 2020, and 189 people were killed or injured in them. Of those collisions, 2 were fatal and 31 were serious.

Collisions were down 29% on 2019 (201), and casualties fell from 267.

Across all years from 1979 to 2025, police recorded 20,193 collisions in Dacorum.

Collisions in 2020
143
Down 29% on 2019
Casualties in 2020
189
Down 29% on 2019
Fatal collisions
2
1.4% of collisions
Serious collisions
31
22% of collisions

Crash severity in Dacorum in 2020

1.4% of collisions in Dacorum in 2020 were fatal and 22% serious, against 1.3% and 20% in Dacorum from 1979 to 2025.

Collisions by worst injury

  • Fatal21.4%
  • Serious3122%
  • Slight11077%

People hurt, by injury

  • Fatal21.1%
  • Serious3519%
  • Slight15280%

Dacorum road accidents by year

Collisions and casualties in Dacorum, 1979 to 2025

Collisions peaked at 670 in 2000. 2020 is highlighted, with 143, down 29% on 2019.

  • Collisions
  • Collisions in 2020: 143
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025161207
2024160205
2023193273
2022187262
2021171227
2020143189
2019201267
2018194259
2017238327
2016234325
2015233323
2014239344
2013238307
2012285382
2011329437
2010325445
2009308454
2008363507
2007403586
2006431622
2005434638
2004459712
2003475725
2002515776
2001591890
2000670999
1999592866
1998610907
1997611887
1996587944
1995561835
1994540719
1993555817
1992543769
1991500678
1990610860
1989611827
1988590816
1987592810
1986622826
1985527732
1984544773
1983519679
1982546760
1981564757
1980621845
1979568780

When and where crashes happen in Dacorum in 2020

Collisions by day of the week

  • Monday18 (13%)
  • Tuesday28 (20%)
  • Wednesday18 (13%)
  • Thursday18 (13%)
  • Friday21 (15%)
  • Saturday26 (18%)
  • Sunday14 (9.8%)

Collisions by time of day

  • 00:00 to 02:595 (3.5%)
  • 03:00 to 05:592 (1.4%)
  • 06:00 to 08:5924 (17%)
  • 09:00 to 11:5922 (15%)
  • 12:00 to 14:5919 (13%)
  • 15:00 to 17:5930 (21%)
  • 18:00 to 20:5923 (16%)
  • 21:00 to 23:5918 (13%)

Collisions by month

  • January16 (11%)
  • February10 (7%)
  • March9 (6.3%)
  • April6 (4.2%)
  • May5 (3.5%)
  • June9 (6.3%)
  • July13 (9.1%)
  • August9 (6.3%)
  • September15 (10%)
  • October19 (13%)
  • November14 (9.8%)
  • December18 (13%)

Light conditions

  • Daylight92 (64%)
  • Dark, street lights lit38 (27%)
  • Dark, no street lighting9 (6.3%)
  • Dark, lighting unknown2 (1.4%)
  • Dark, street lights unlit2 (1.4%)

Weather at the time

  • Fine, no high winds111 (78%)
  • Raining, no high winds18 (13%)
  • Fine with high winds5 (3.5%)
  • Raining with high winds2 (1.4%)
  • Fog or mist1 (0.7%)
  • Other3 (2.1%)
  • Not recorded3 (2.1%)

Road surface

  • Dry91 (64%)
  • Wet or damp50 (35%)
  • Frost or ice2 (1.4%)

Speed limit at the scene

  • 20 mph3 (2.1%)
  • 30 mph97 (68%)
  • 40 mph14 (9.8%)
  • 50 mph2 (1.4%)
  • 60 mph14 (9.8%)
  • 70 mph13 (9.1%)

Type of road

  • Single carriageway104 (73%)
  • Dual carriageway20 (14%)
  • Roundabout18 (13%)
  • Not recorded1 (0.7%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in Dacorum in 2020

Casualties by road user

  • Car occupant110 (58%)
  • Pedestrian29 (15%)
  • Cyclist19 (10%)
  • Motorcyclist19 (10%)
  • Van occupant6 (3.2%)
  • Taxi or private hire car occupant3 (1.6%)
  • Goods vehicle occupant (weight unknown)2 (1.1%)
  • Bus or coach occupant1 (0.5%)

Casualties by age

  • 6 to 103 (1.6%)
  • 11 to 156 (3.2%)
  • 16 to 2024 (13%)
  • 21 to 2523 (12%)
  • 26 to 3534 (18%)
  • 36 to 4525 (13%)
  • 46 to 5533 (17%)
  • 56 to 6519 (10%)
  • 66 to 759 (4.8%)
  • Over 759 (4.8%)
  • Not recorded4 (2.1%)

Drivers, passengers and pedestrians

  • Driver or rider136 (72%)
  • Pedestrian29 (15%)
  • Passenger24 (13%)

Vehicles involved

  • Car191 (69%)
  • Pedal cycle22 (8%)
  • Van or goods vehicle up to 3.5 tonnes22 (8%)
  • Motorcycle20 (7.2%)
  • Goods vehicle over 3.5 tonnes7 (2.5%)
  • Goods vehicle, weight unknown6 (2.2%)
  • Other vehicle4 (1.4%)
  • Taxi or private hire car2 (0.7%)
  • Agricultural vehicle1 (0.4%)
  • Bus or coach1 (0.4%)

Source: Department for Transport, STATS19 road safety data

Crash map for Dacorum in 2020

Map of the last 24 crashes of 2020 and the 10 busiest accident hotspots in Dacorum

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

  • 24 crashes
  • Serious
  • Slight

Accident hotspots (10)

How Dacorum ranked among 350 areas in 2020

Of the 350 areas in England, Scotland and Wales, Dacorum had fewer road collisions than 240 of them in 2020.

Collisions
241st
of 350 areas, highest first
Casualties
237th
of 350 areas, highest first
Fatal collisions
206th
of 350 areas, highest first
Serious collisions
248th
of 350 areas, highest first

Accident hotspots in Dacorum in 2020

Hemel Hempstead Town, Dacorum, HP1 1BG area was the busiest accident hotspot in Dacorum in 2020, with 18 collisions, 4 of them serious.

Roads in Dacorum with the most crashes in 2020

The A4251 had the most collisions in Dacorum in 2020: 14, including 1 fatal and 3 serious.

Roads ranked by collisions in Dacorum, 2020
RankRoadCollisionsCasualtiesFatalSerious
1stA4251142513
2ndB4878902
3rdA4171003
4thA41461012
5thM16700
6thA51835901
7thA41473300
8thB45063302
9thB45052200
10thB4862200
11thA41461200
12thA4161100
13thB4401100
14thB46351100
15thM251100

Towns in Dacorum: crashes in 2020

Hemel Hempstead had the most collisions of any town in Dacorum in 2020: 76.

Postcode districts in Dacorum: crashes in 2020

HP2 had the most collisions of any postcode district in Dacorum in 2020: 40.

Latest crashes in Dacorum in 2020

Of the last 24 crashes in Dacorum in 2020, none were fatal and 4 were serious. The last was on 24 December 2020.

Severity

Dacorum road accidents in other years