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CrashStats

Dacorum road accidents in 2011: crash map and statistics

Police recorded 329 road traffic collisions in Dacorum in 2011, and 437 people were killed or injured in them. Of those collisions, 2 were fatal and 44 were serious.

Collisions were up 1% on 2010 (325), and casualties fell from 445.

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

Collisions in 2011
329
Up 1% on 2010
Casualties in 2011
437
Down 2% on 2010
Fatal collisions
2
0.6% of collisions
Serious collisions
44
13% of collisions

Crash severity in Dacorum in 2011

0.6% of collisions in Dacorum in 2011 were fatal and 13% serious, against 1.3% and 20% in Dacorum from 1979 to 2025.

Collisions by worst injury

  • Fatal20.6%
  • Serious4413%
  • Slight28386%

People hurt, by injury

  • Fatal20.5%
  • Serious4510%
  • Slight39089%

Dacorum road accidents by year

Collisions and casualties in Dacorum, 1979 to 2025

Collisions peaked at 670 in 2000. 2011 is highlighted, with 329, up 1% on 2010.

  • Collisions
  • Collisions in 2011
  • 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 2011

Collisions by day of the week

  • Monday44 (13%)
  • Tuesday44 (13%)
  • Wednesday64 (19%)
  • Thursday34 (10%)
  • Friday53 (16%)
  • Saturday46 (14%)
  • Sunday44 (13%)

Collisions by time of day

  • 00:00 to 02:597 (2.1%)
  • 03:00 to 05:5910 (3%)
  • 06:00 to 08:5948 (15%)
  • 09:00 to 11:5950 (15%)
  • 12:00 to 14:5943 (13%)
  • 15:00 to 17:5997 (29%)
  • 18:00 to 20:5948 (15%)
  • 21:00 to 23:5926 (7.9%)

Collisions by month

  • January28 (8.5%)
  • February29 (8.8%)
  • March26 (7.9%)
  • April28 (8.5%)
  • May25 (7.6%)
  • June22 (6.7%)
  • July21 (6.4%)
  • August20 (6.1%)
  • September27 (8.2%)
  • October40 (12%)
  • November39 (12%)
  • December24 (7.3%)

Light conditions

  • Daylight234 (71%)
  • Dark, street lights lit72 (22%)
  • Dark, no street lighting20 (6.1%)
  • Dark, street lights unlit3 (0.9%)

Weather at the time

  • Fine, no high winds276 (84%)
  • Raining, no high winds31 (9.4%)
  • Fine with high winds4 (1.2%)
  • Fog or mist1 (0.3%)
  • Other16 (4.9%)
  • Not recorded1 (0.3%)

Road surface

  • Dry235 (71%)
  • Wet or damp83 (25%)
  • Frost or ice11 (3.3%)

Speed limit at the scene

  • 20 mph1 (0.3%)
  • 30 mph188 (57%)
  • 40 mph28 (8.5%)
  • 50 mph15 (4.6%)
  • 60 mph50 (15%)
  • 70 mph47 (14%)

Type of road

  • Single carriageway231 (70%)
  • Dual carriageway55 (17%)
  • Roundabout30 (9.1%)
  • One way street or slip road13 (4%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in Dacorum in 2011

Casualties by road user

  • Car occupant279 (64%)
  • Pedestrian52 (12%)
  • Motorcyclist36 (8.2%)
  • Cyclist35 (8%)
  • Van occupant18 (4.1%)
  • Bus or coach occupant6 (1.4%)
  • Taxi or private hire car occupant5 (1.1%)
  • Other vehicle occupant2 (0.5%)
  • Goods vehicle occupant (over 3.5 tonnes)1 (0.2%)
  • Minibus occupant1 (0.2%)
  • Other2 (0.5%)

Casualties by age

  • 0 to 56 (1.4%)
  • 6 to 107 (1.6%)
  • 11 to 1526 (5.9%)
  • 16 to 2044 (10%)
  • 21 to 2555 (13%)
  • 26 to 3595 (22%)
  • 36 to 4577 (18%)
  • 46 to 5557 (13%)
  • 56 to 6532 (7.3%)
  • 66 to 7514 (3.2%)
  • Over 7520 (4.6%)
  • Not recorded4 (0.9%)

Drivers, passengers and pedestrians

  • Driver or rider285 (65%)
  • Passenger100 (23%)
  • Pedestrian52 (12%)

Vehicles involved

  • Car464 (75%)
  • Van or goods vehicle up to 3.5 tonnes40 (6.5%)
  • Pedal cycle36 (5.8%)
  • Motorcycle35 (5.7%)
  • Goods vehicle over 3.5 tonnes12 (1.9%)
  • Bus or coach9 (1.5%)
  • Taxi or private hire car8 (1.3%)
  • Other vehicle7 (1.1%)
  • Agricultural vehicle3 (0.5%)
  • Minibus3 (0.5%)
  • Other1 (0.2%)

Source: Department for Transport, STATS19 road safety data

Crash map for Dacorum in 2011

Map of the last 24 crashes of 2011 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 351 areas in 2011

Of the 351 areas in England, Scotland and Wales, Dacorum had fewer road collisions than 183 of them in 2011.

Collisions
184th
of 351 areas, highest first
Casualties
190th
of 351 areas, highest first
Fatal collisions
242nd
of 351 areas, highest first
Serious collisions
201st
of 351 areas, highest first

Accident hotspots in Dacorum in 2011

Apsley and Corner Hall, Dacorum, HP3 9YT area and Hemel Hempstead Town, Dacorum, HP1 1BG area were among the busiest accident hotspots in Dacorum in 2011, with 25 collisions each.

Roads in Dacorum with the most crashes in 2011

The A4251 had the most collisions in Dacorum in 2011: 34, including 7 serious.

Roads ranked by collisions in Dacorum, 2011
RankRoadCollisionsCasualtiesFatalSerious
1stA4251345207
2ndA41335417
3rdA4147202300
4thM1182401
5thA414172005
6thA4146172611
7thA5142705
8thB487101400
9thB45055702
10thB46355500
11thB4864500
12thM253300
13thA4162601
14thB45062200
15thB4882200
16thA51831100

Towns in Dacorum: crashes in 2011

Hemel Hempstead had the most collisions of any town in Dacorum in 2011: 141.

Postcode districts in Dacorum: crashes in 2011

HP2 had the most collisions of any postcode district in Dacorum in 2011: 74.

Latest crashes in Dacorum in 2011

Of the last 24 crashes in Dacorum in 2011, none were fatal and 1 was serious. The last was on 29 December 2011.

Severity

Dacorum road accidents in other years