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CrashStats

Hertsmere road accidents in 2018: crash map and statistics

Police recorded 272 road traffic collisions in Hertsmere in 2018, and 394 people were killed or injured in them. Of those collisions, 2 were fatal and 38 were serious.

Collisions were down 12% on 2017 (308), and casualties fell from 422.

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

Collisions in 2018
272
Down 12% on 2017
Casualties in 2018
394
Down 7% on 2017
Fatal collisions
2
0.7% of collisions
Serious collisions
38
14% of collisions

Crash severity in Hertsmere in 2018

0.7% of collisions in Hertsmere in 2018 were fatal and 14% serious, against 1.4% and 16% in Hertsmere from 1979 to 2025.

Collisions by worst injury

  • Fatal20.7%
  • Serious3814%
  • Slight23285%

People hurt, by injury

  • Fatal20.5%
  • Serious389.6%
  • Slight35490%

Hertsmere road accidents by year

Collisions and casualties in Hertsmere, 1979 to 2025

Collisions peaked at 646 in 1979. 2018 is highlighted, with 272, down 12% on 2017.

  • Collisions
  • Collisions in 2018
  • 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 2018

Collisions by day of the week

  • Monday34 (13%)
  • Tuesday44 (16%)
  • Wednesday49 (18%)
  • Thursday34 (13%)
  • Friday51 (19%)
  • Saturday34 (13%)
  • Sunday26 (9.6%)

Collisions by time of day

  • 00:00 to 02:599 (3.3%)
  • 03:00 to 05:592 (0.7%)
  • 06:00 to 08:5942 (15%)
  • 09:00 to 11:5944 (16%)
  • 12:00 to 14:5947 (17%)
  • 15:00 to 17:5969 (25%)
  • 18:00 to 20:5939 (14%)
  • 21:00 to 23:5920 (7.4%)

Collisions by month

  • January25 (9.2%)
  • February25 (9.2%)
  • March17 (6.3%)
  • April21 (7.7%)
  • May30 (11%)
  • June27 (9.9%)
  • July23 (8.5%)
  • August19 (7%)
  • September24 (8.8%)
  • October24 (8.8%)
  • November22 (8.1%)
  • December15 (5.5%)

Light conditions

  • Daylight202 (74%)
  • Dark, street lights lit52 (19%)
  • Dark, no street lighting11 (4%)
  • Dark, street lights unlit4 (1.5%)
  • Dark, lighting unknown3 (1.1%)

Weather at the time

  • Fine, no high winds212 (78%)
  • Raining, no high winds33 (12%)
  • Fine with high winds2 (0.7%)
  • Snowing, no high winds2 (0.7%)
  • Raining with high winds1 (0.4%)
  • Snowing with high winds1 (0.4%)
  • Other18 (6.6%)
  • Not recorded3 (1.1%)

Road surface

  • Dry200 (74%)
  • Wet or damp64 (24%)
  • Frost or ice5 (1.8%)
  • Flood over 3cm deep2 (0.7%)
  • Snow1 (0.4%)

Speed limit at the scene

  • 30 mph139 (51%)
  • 40 mph14 (5.1%)
  • 50 mph7 (2.6%)
  • 60 mph35 (13%)
  • 70 mph77 (28%)

Type of road

  • Single carriageway140 (51%)
  • Dual carriageway81 (30%)
  • Roundabout34 (13%)
  • One way street or slip road17 (6.3%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in Hertsmere in 2018

Casualties by road user

  • Car occupant277 (70%)
  • Pedestrian40 (10%)
  • Motorcyclist29 (7.4%)
  • Cyclist19 (4.8%)
  • Van occupant17 (4.3%)
  • Bus or coach occupant8 (2%)
  • Taxi or private hire car occupant3 (0.8%)
  • Goods vehicle occupant (over 3.5 tonnes)1 (0.3%)

Casualties by age

  • 0 to 55 (1.3%)
  • 6 to 1012 (3%)
  • 11 to 158 (2%)
  • 16 to 2038 (9.6%)
  • 21 to 2547 (12%)
  • 26 to 3574 (19%)
  • 36 to 4572 (18%)
  • 46 to 5562 (16%)
  • 56 to 6520 (5.1%)
  • 66 to 7522 (5.6%)
  • Over 7523 (5.8%)
  • Not recorded11 (2.8%)

Drivers, passengers and pedestrians

  • Driver or rider267 (68%)
  • Passenger87 (22%)
  • Pedestrian40 (10%)

Vehicles involved

  • Car408 (76%)
  • Motorcycle32 (5.9%)
  • Van or goods vehicle up to 3.5 tonnes29 (5.4%)
  • Pedal cycle23 (4.3%)
  • Goods vehicle, weight unknown14 (2.6%)
  • Goods vehicle over 3.5 tonnes13 (2.4%)
  • Bus or coach6 (1.1%)
  • Taxi or private hire car6 (1.1%)
  • Other vehicle5 (0.9%)
  • Not recorded4 (0.7%)

Source: Department for Transport, STATS19 road safety data

Crash map for Hertsmere in 2018

Map of the last 24 crashes of 2018 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
  • Fatal
  • Serious
  • Slight

Accident hotspots (10)

How Hertsmere ranked among 351 areas in 2018

Of the 351 areas in England, Scotland and Wales, Hertsmere had the 166th most road collisions in 2018.

Collisions
166th
highest of 351 areas
Casualties
150th
highest of 351 areas
Fatal collisions
231st
of 351 areas, highest first
Serious collisions
247th
of 351 areas, highest first

Accident hotspots in Hertsmere in 2018

Shenley, Hertsmere, EN6 3NP area was the busiest accident hotspot in Hertsmere in 2018, with 24 collisions, 3 of them serious.

Roads in Hertsmere with the most crashes in 2018

The M25 had the most collisions in Hertsmere in 2018: 42, including 6 serious.

Roads ranked by collisions in Hertsmere, 2018
RankRoadCollisionsCasualtiesFatalSerious
1stM25426706
2ndA411172802
3rdA1162511
4thA41111503
5thM1112402
6thB5378101302
7thA100081001
8thB55681502
9thA1(M)7900
10thA400871300
11thA51837802
12thB4625611
13thA41403400
14thA51353300
15thA10052201
16thA10812301
17thA4092300

Towns in Hertsmere: crashes in 2018

Borehamwood had the most collisions of any town in Hertsmere in 2018: 46.

Postcode districts in Hertsmere: crashes in 2018

WD6 had the most collisions of any postcode district in Hertsmere in 2018: 79.

Latest crashes in Hertsmere in 2018

Of the last 24 crashes in Hertsmere in 2018, 1 was fatal and 4 were serious. The last was on 29 December 2018.

Severity

Hertsmere road accidents in other years