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CrashStats

Three Rivers road accidents in 2021: crash map and statistics

Police recorded 99 road traffic collisions in Three Rivers in 2021, and 128 people were killed or injured in them. Of those collisions, none were fatal and 26 were serious.

Collisions were up 4% on 2020 (95), and casualties rose from 119.

Across all years from 1979 to 2025, police recorded 13,304 collisions in Three Rivers.

Collisions in 2021
99
Up 4% on 2020
Casualties in 2021
128
Up 8% on 2020
Fatal collisions
0
0% of collisions
Serious collisions
26
26% of collisions

Crash severity in Three Rivers in 2021

None of the collisions in Three Rivers in 2021 were fatal and 26% were serious, against 1.3% and 19% in Three Rivers from 1979 to 2025.

Collisions by worst injury

  • Fatal00%
  • Serious2626%
  • Slight7374%

People hurt, by injury

  • Fatal00%
  • Serious3023%
  • Slight9877%

Three Rivers road accidents by year

Collisions and casualties in Three Rivers, 1979 to 2025

Collisions peaked at 484 in 1997. 2021 is highlighted, with 99, up 4% on 2020.

  • Collisions
  • Collisions in 2021: 99
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025114168
2024104139
2023135179
2022140187
202199128
202095119
2019132195
2018175251
2017202271
2016185275
2015190281
2014199294
2013168235
2012161216
2011229330
2010218299
2009229320
2008268400
2007288435
2006276384
2005327490
2004307466
2003348497
2002355518
2001388550
2000387553
1999418624
1998439653
1997484670
1996445678
1995443699
1994336524
1993361525
1992311452
1991282407
1990332469
1989347461
1988341487
1987319449
1986359472
1985376509
1984369511
1983315416
1982346475
1981328451
1980284382
1979350469

When and where crashes happen in Three Rivers in 2021

Collisions by day of the week

  • Monday13 (13%)
  • Tuesday16 (16%)
  • Wednesday14 (14%)
  • Thursday16 (16%)
  • Friday15 (15%)
  • Saturday17 (17%)
  • Sunday8 (8.1%)

Collisions by time of day

  • 00:00 to 02:592 (2%)
  • 03:00 to 05:590 (0%)
  • 06:00 to 08:5918 (18%)
  • 09:00 to 11:5910 (10%)
  • 12:00 to 14:5922 (22%)
  • 15:00 to 17:5928 (28%)
  • 18:00 to 20:5915 (15%)
  • 21:00 to 23:594 (4%)

Collisions by month

  • January3 (3%)
  • February9 (9.1%)
  • March7 (7.1%)
  • April9 (9.1%)
  • May6 (6.1%)
  • June10 (10%)
  • July6 (6.1%)
  • August7 (7.1%)
  • September10 (10%)
  • October15 (15%)
  • November10 (10%)
  • December7 (7.1%)

Light conditions

  • Daylight79 (80%)
  • Dark, street lights lit16 (16%)
  • Dark, no street lighting3 (3%)
  • Dark, lighting unknown1 (1%)

Weather at the time

  • Fine, no high winds82 (83%)
  • Raining, no high winds12 (12%)
  • Snowing, no high winds1 (1%)
  • Other3 (3%)
  • Not recorded1 (1%)

Road surface

  • Dry68 (69%)
  • Wet or damp27 (27%)
  • Snow1 (1%)
  • Not recorded3 (3%)

Speed limit at the scene

  • 20 mph1 (1%)
  • 30 mph49 (49%)
  • 40 mph15 (15%)
  • 50 mph4 (4%)
  • 60 mph3 (3%)
  • 70 mph27 (27%)

Type of road

  • Single carriageway59 (60%)
  • Dual carriageway30 (30%)
  • Roundabout6 (6.1%)
  • One way street or slip road4 (4%)

Source: Department for Transport, STATS19 road safety data

Who was hurt in road crashes in Three Rivers in 2021

Casualties by road user

  • Car occupant66 (52%)
  • Motorcyclist16 (13%)
  • Van occupant16 (13%)
  • Cyclist13 (10%)
  • Pedestrian9 (7%)
  • Bus or coach occupant2 (1.6%)
  • Goods vehicle occupant (weight unknown)2 (1.6%)
  • Agricultural vehicle occupant1 (0.8%)
  • Goods vehicle occupant (over 3.5 tonnes)1 (0.8%)
  • Taxi or private hire car occupant1 (0.8%)
  • Not recorded1 (0.8%)

Casualties by age

  • 0 to 51 (0.8%)
  • 6 to 107 (5.5%)
  • 11 to 152 (1.6%)
  • 16 to 2010 (7.8%)
  • 21 to 2516 (13%)
  • 26 to 3527 (21%)
  • 36 to 4526 (20%)
  • 46 to 5513 (10%)
  • 56 to 6514 (11%)
  • 66 to 754 (3.1%)
  • Over 758 (6.3%)

Drivers, passengers and pedestrians

  • Driver or rider102 (80%)
  • Passenger17 (13%)
  • Pedestrian9 (7%)

Vehicles involved

  • Car149 (65%)
  • Van or goods vehicle up to 3.5 tonnes30 (13%)
  • Motorcycle16 (7%)
  • Pedal cycle14 (6.1%)
  • Goods vehicle over 3.5 tonnes7 (3.1%)
  • Goods vehicle, weight unknown6 (2.6%)
  • Bus or coach3 (1.3%)
  • Other vehicle1 (0.4%)
  • Personal powered transporter (e-scooter or similar)1 (0.4%)
  • Taxi or private hire car1 (0.4%)
  • Other1 (0.4%)

Source: Department for Transport, STATS19 road safety data

Crash map for Three Rivers in 2021

Map of the last 24 crashes of 2021 and the 10 busiest accident hotspots in Three Rivers

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

  • 24 crashes
  • Serious
  • Slight

Accident hotspots (10)

How Three Rivers ranked among 350 areas in 2021

Of the 350 areas in England, Scotland and Wales, Three Rivers had fewer road collisions than 307 of them in 2021.

Collisions
308th
of 350 areas, highest first
Casualties
310th
of 350 areas, highest first
Fatal collisions
None
joint lowest with 25 other areas
Serious collisions
299th
of 350 areas, highest first

Accident hotspots in Three Rivers in 2021

South Oxhey, Three Rivers, WD19 7SD area was the busiest accident hotspot in Three Rivers in 2021, with 10 collisions, 4 of them serious.

Roads in Three Rivers with the most crashes in 2021

The M25 had the most collisions in Three Rivers in 2021: 26, including 3 serious.

Roads ranked by collisions in Three Rivers, 2021
RankRoadCollisionsCasualtiesFatalSerious
1stM25263803
2ndA412101104
3rdB454281004
4thA40461001
5thA414501
6thA41254601
7thM13502
8thA4052200
9thA41451101

Towns in Three Rivers: crashes in 2021

Watford, Watford had the most collisions of any town in Three Rivers in 2021: 21.

Postcode districts in Three Rivers: crashes in 2021

WD3 had the most collisions of any postcode district in Three Rivers in 2021: 48.

Latest crashes in Three Rivers in 2021

Of the last 24 crashes in Three Rivers in 2021, none were fatal and 7 were serious. The last was on 29 December 2021.

Severity

Three Rivers road accidents in other years