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CrashStats

Hertsmere road accidents in 2011: crash map and statistics

Police recorded 342 road traffic collisions in Hertsmere in 2011, and 487 people were killed or injured in them. Of those collisions, 5 were fatal and 35 were serious.

Collisions were down 4% on 2010 (355), and casualties fell from 509.

Across all years from 1979 to 2025, police recorded 20,104 collisions in Hertsmere.

Collisions in 2011
342
Down 4% on 2010
Casualties in 2011
487
Down 4% on 2010
Fatal collisions
5
1.5% of collisions
Serious collisions
35
10% of collisions

Crash severity in Hertsmere in 2011

1.5% of collisions in Hertsmere in 2011 were fatal and 10% serious, against 1.4% and 16% in Hertsmere from 1979 to 2025.

Collisions by worst injury

  • Fatal51.5%
  • Serious3510%
  • Slight30288%

People hurt, by injury

  • Fatal51%
  • Serious449%
  • Slight43890%

Hertsmere road accidents by year

Collisions and casualties in Hertsmere, 1979 to 2025

Collisions peaked at 646 in 1979. 2011 is highlighted, with 342, down 4% on 2010.

  • Collisions
  • Collisions in 2011
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025223317
2024249349
2023234316
2022263381
2021215295
2020189278
2019231298
2018272394
2017308422
2016349517
2015364510
2014337577
2013308438
2012310449
2011342487
2010355509
2009348494
2008340484
2007396619
2006429621
2005429622
2004468681
2003459700
2002505778
2001499771
2000506747
1999539719
1998502684
1997531703
1996520656
1995568750
1994502645
1993480661
1992497688
1991479644
1990586777
1989569731
1988510690
1987540716
1986544683
1985528671
1984565717
1983452586
1982496668
1981540711
1980582799
1979646903

When and where crashes happen in Hertsmere in 2011

Collisions by day of the week

  • Monday56 (16%)
  • Tuesday41 (12%)
  • Wednesday55 (16%)
  • Thursday39 (11%)
  • Friday62 (18%)
  • Saturday48 (14%)
  • Sunday41 (12%)

Collisions by time of day

  • 00:00 to 02:597 (2%)
  • 03:00 to 05:596 (1.8%)
  • 06:00 to 08:5952 (15%)
  • 09:00 to 11:5945 (13%)
  • 12:00 to 14:5968 (20%)
  • 15:00 to 17:5993 (27%)
  • 18:00 to 20:5945 (13%)
  • 21:00 to 23:5926 (7.6%)

Collisions by month

  • January35 (10%)
  • February24 (7%)
  • March20 (5.8%)
  • April30 (8.8%)
  • May21 (6.1%)
  • June42 (12%)
  • July25 (7.3%)
  • August36 (11%)
  • September32 (9.4%)
  • October28 (8.2%)
  • November27 (7.9%)
  • December22 (6.4%)

Light conditions

  • Daylight258 (75%)
  • Dark, street lights lit72 (21%)
  • Dark, no street lighting10 (2.9%)
  • Dark, lighting unknown1 (0.3%)
  • Dark, street lights unlit1 (0.3%)

Weather at the time

  • Fine, no high winds288 (84%)
  • Raining, no high winds37 (11%)
  • Fine with high winds5 (1.5%)
  • Fog or mist2 (0.6%)
  • Raining with high winds2 (0.6%)
  • Other4 (1.2%)
  • Not recorded4 (1.2%)

Road surface

  • Dry256 (75%)
  • Wet or damp81 (24%)
  • Frost or ice5 (1.5%)

Speed limit at the scene

  • 20 mph2 (0.6%)
  • 30 mph146 (43%)
  • 40 mph18 (5.3%)
  • 50 mph5 (1.5%)
  • 60 mph84 (25%)
  • 70 mph87 (25%)

Type of road

  • Single carriageway192 (56%)
  • Dual carriageway74 (22%)
  • Roundabout48 (14%)
  • One way street or slip road28 (8.2%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in Hertsmere in 2011

Casualties by road user

  • Car occupant347 (71%)
  • Motorcyclist41 (8.4%)
  • Pedestrian35 (7.2%)
  • Cyclist22 (4.5%)
  • Van occupant22 (4.5%)
  • Goods vehicle occupant (over 3.5 tonnes)10 (2.1%)
  • Bus or coach occupant6 (1.2%)
  • Taxi or private hire car occupant3 (0.6%)
  • Other vehicle occupant1 (0.2%)

Casualties by age

  • 0 to 54 (0.8%)
  • 6 to 1012 (2.5%)
  • 11 to 1520 (4.1%)
  • 16 to 2050 (10%)
  • 21 to 2563 (13%)
  • 26 to 35103 (21%)
  • 36 to 4596 (20%)
  • 46 to 5573 (15%)
  • 56 to 6540 (8.2%)
  • 66 to 759 (1.8%)
  • Over 7515 (3.1%)
  • Not recorded2 (0.4%)

Drivers, passengers and pedestrians

  • Driver or rider348 (71%)
  • Passenger104 (21%)
  • Pedestrian35 (7.2%)

Vehicles involved

  • Car516 (73%)
  • Van or goods vehicle up to 3.5 tonnes49 (6.9%)
  • Motorcycle44 (6.2%)
  • Goods vehicle over 3.5 tonnes41 (5.8%)
  • Pedal cycle23 (3.3%)
  • Bus or coach12 (1.7%)
  • Taxi or private hire car12 (1.7%)
  • Other vehicle8 (1.1%)
  • Agricultural vehicle1 (0.1%)

Source: Department for Transport, STATS19 road safety data

Crash map for Hertsmere in 2011

Map of the last 24 crashes of 2011 and the 10 busiest accident hotspots in Hertsmere

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

  • 24 crashes
  • Serious
  • Slight

Accident hotspots (10)

How Hertsmere ranked among 351 areas in 2011

Of the 351 areas in England, Scotland and Wales, Hertsmere had the 174th most road collisions in 2011.

Collisions
174th
highest of 351 areas
Casualties
163rd
highest of 351 areas
Fatal collisions
118th
highest of 351 areas
Serious collisions
240th
of 351 areas, highest first

Accident hotspots in Hertsmere in 2011

Potters Bar Oakmere, Hertsmere, EN6 5ES area was the busiest accident hotspot in Hertsmere in 2011, with 30 collisions, 1 of them serious.

Roads in Hertsmere with the most crashes in 2011

The M25 had the most collisions in Hertsmere in 2011: 53, including 1 fatal and 3 serious.

Roads ranked by collisions in Hertsmere, 2011
RankRoadCollisionsCasualtiesFatalSerious
1stM25538013
2ndA41364720
3rdA411263906
4thA1173603
5thB5378172400
6thA5183152402
7thB462152004
8thB556142201
9thM1142303
10thA100091011
11thA11181301
12thA1(M)71000
13thA51356900
14thA40085901
15thA41404400
16thA10053400
17thA10812501
18thA41251100

Towns in Hertsmere: crashes in 2011

Borehamwood had the most collisions of any town in Hertsmere in 2011: 48.

Postcode districts in Hertsmere: crashes in 2011

WD6 had the most collisions of any postcode district in Hertsmere in 2011: 94.

Latest crashes in Hertsmere in 2011

Of the last 24 crashes in Hertsmere in 2011, none were fatal and 1 was serious. The last was on 23 December 2011.

Severity

Hertsmere road accidents in other years