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CrashStats

Three Rivers road accidents: crash map and statistics

Police recorded 13,304 road traffic collisions in Three Rivers from 1979 to 2025, and 18,963 people were killed or injured in them. Of those collisions, 167 were fatal and 2,549 were serious.

In 2025 police recorded 114 collisions, up 10% on 2024 (104), and casualties rose from 139 to 168.

Collisions, 1979 to 2025
13,304
68th lowest of 351 areas
Casualties
18,963
1.43 per collision
Fatal collisions
167
1.3% of collisions
Collisions in 2025
114
Up 10% on 2024

Crash severity in Three Rivers

1.3% of collisions in Three Rivers from 1979 to 2025 were fatal and 19% serious, against 1.6% and 18% across Great Britain.

Collisions by worst injury

  • Fatal1671.3%
  • Serious2,54919%
  • Slight10,58880%

People hurt, by injury

  • Fatal1800.9%
  • Serious3,02816%
  • Slight15,75583%

Three Rivers road accidents by year

Collisions and casualties in Three Rivers, 1979 to 2025

Collisions peaked at 484 in 1997. In 2025 there were 114, up 10% on 2024.

  • Collisions
  • Collisions in 2025: 114
  • 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

Collisions by day of the week

  • Monday1,914 (14%)
  • Tuesday1,948 (15%)
  • Wednesday1,904 (14%)
  • Thursday2,059 (15%)
  • Friday2,235 (17%)
  • Saturday1,751 (13%)
  • Sunday1,493 (11%)

Collisions by time of day

  • 00:00 to 02:59501 (3.8%)
  • 03:00 to 05:59261 (2%)
  • 06:00 to 08:591,962 (15%)
  • 09:00 to 11:591,961 (15%)
  • 12:00 to 14:592,212 (17%)
  • 15:00 to 17:593,109 (23%)
  • 18:00 to 20:592,073 (16%)
  • 21:00 to 23:591,225 (9.2%)

Collisions by month

  • January1,093 (8.2%)
  • February998 (7.5%)
  • March1,043 (7.8%)
  • April989 (7.4%)
  • May1,077 (8.1%)
  • June1,130 (8.5%)
  • July1,118 (8.4%)
  • August1,016 (7.6%)
  • September1,114 (8.4%)
  • October1,200 (9%)
  • November1,324 (10%)
  • December1,202 (9%)

Light conditions

  • Daylight9,550 (72%)
  • Dark, street lights lit2,884 (22%)
  • Dark, no street lighting679 (5.1%)
  • Dark, lighting unknown115 (0.9%)
  • Dark, street lights unlit76 (0.6%)

Weather at the time

  • Fine, no high winds10,527 (79%)
  • Raining, no high winds1,848 (14%)
  • Fine with high winds149 (1.1%)
  • Raining with high winds148 (1.1%)
  • Fog or mist107 (0.8%)
  • Snowing, no high winds71 (0.5%)
  • Snowing with high winds11 (0.1%)
  • Other277 (2.1%)
  • Not recorded166 (1.2%)

Road surface

  • Dry8,280 (62%)
  • Wet or damp4,609 (35%)
  • Frost or ice267 (2%)
  • Snow70 (0.5%)
  • Flood over 3cm deep26 (0.2%)
  • Oil or diesel10 (0.1%)
  • Mud3 (under 0.1%)
  • Not recorded39 (0.3%)

Speed limit at the scene

  • 20 mph61 (0.5%)
  • 30 mph6,334 (48%)
  • 40 mph1,569 (12%)
  • 50 mph484 (3.6%)
  • 60 mph1,620 (12%)
  • 70 mph3,236 (24%)

Type of road

  • Single carriageway8,478 (64%)
  • Dual carriageway3,746 (28%)
  • Roundabout675 (5.1%)
  • One way street or slip road373 (2.8%)
  • Not recorded32 (0.2%)

Source: Department for Transport, STATS19 road safety data

Who is hurt in road crashes in Three Rivers

Casualties by road user

  • Car occupant13,365 (70%)
  • Motorcyclist1,828 (9.6%)
  • Pedestrian1,403 (7.4%)
  • Cyclist995 (5.2%)
  • Van occupant637 (3.4%)
  • Goods vehicle occupant (over 3.5 tonnes)281 (1.5%)
  • Bus or coach occupant158 (0.8%)
  • Minibus occupant101 (0.5%)
  • Taxi or private hire car occupant89 (0.5%)
  • Other vehicle occupant74 (0.4%)
  • Other26 (0.1%)
  • Not recorded6 (under 0.1%)

Casualties by age

  • 0 to 5344 (1.8%)
  • 6 to 10634 (3.3%)
  • 11 to 15934 (4.9%)
  • 16 to 203,287 (17%)
  • 21 to 252,720 (14%)
  • 26 to 353,827 (20%)
  • 36 to 452,653 (14%)
  • 46 to 552,010 (11%)
  • 56 to 651,287 (6.8%)
  • 66 to 75744 (3.9%)
  • Over 75465 (2.5%)
  • Not recorded58 (0.3%)

Drivers, passengers and pedestrians

  • Driver or rider12,558 (66%)
  • Passenger5,002 (26%)
  • Pedestrian1,403 (7.4%)

Vehicles involved

  • Car20,180 (76%)
  • Motorcycle1,839 (7%)
  • Van or goods vehicle up to 3.5 tonnes1,383 (5.2%)
  • Goods vehicle over 3.5 tonnes1,306 (4.9%)
  • Pedal cycle1,017 (3.8%)
  • Bus or coach233 (0.9%)
  • Other vehicle183 (0.7%)
  • Taxi or private hire car136 (0.5%)
  • Minibus83 (0.3%)
  • Goods vehicle, weight unknown50 (0.2%)
  • Other25 (0.1%)
  • Not recorded14 (0.1%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes and hotspots in Three Rivers

Map of the 24 most recent crashes 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 ranks among 351 areas

Of the 351 areas in England, Scotland and Wales, Three Rivers had the 68th fewest road collisions from 1979 to 2025.

Collisions
68th
lowest of 351 areas
Casualties
89th
lowest of 351 areas
Fatal collisions
45th
lowest of 351 areas
Serious collisions
68th
lowest of 351 areas
Areas ranked by collisions, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
281stUttlesford13,36518,9522743,141
282ndBromsgrove13,36018,9023262,576
283rdHigh Peak13,32918,9412882,754
284thThree Rivers (this area)13,30418,9631672,549
285thEast Ayrshire13,27218,4974033,591
286thGreat Yarmouth13,13117,5772172,836
287thBlaby13,11517,9792691,880

Accident hotspots in Three Rivers

Kings Langley, Dacorum, WD4 8QJ area is the busiest accident hotspot in Three Rivers, with 394 collisions from 2001 to 2025, 3 of them fatal.

Roads in Three Rivers with the most crashes

The M25 had the most collisions in Three Rivers from 1979 to 2025: 2,461, including 28 fatal and 281 serious.

Roads ranked by collisions in Three Rivers, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stM252,4613,79928281
2ndA4121,5292,04017319
3rdA4041,0641,54715194
4thA416479597105
5thB45425978426132
6thA41255137967109
7thA4054076151079
8thM13215121155
9thA4008252388365
10thA4145211305150
11thA411263213
12thA13400
13thA103401
14thA4143401
15thA41783300
16thA1(M)2201
17thA41462200
18thA5052201
19thA10601200
20thA11551100

Towns in Three Rivers

Rickmansworth had the most collisions of any town in Three Rivers from 1979 to 2025: 2,090.

Postcode districts in Three Rivers

WD3 had the most collisions of any postcode district in Three Rivers from 1979 to 2025: 6,695.

Latest crashes in Three Rivers

Of the latest 24 crashes in Three Rivers, none were fatal and 4 were serious. The most recent was on 30 December 2025.

Severity