Skip to main content
CrashStats

WD18 road accidents: crash map and statistics

Police recorded 3,620 road traffic collisions in the WD18 postcode district, Watford, from 1979 to 2025, and 4,597 people were killed or injured in them. Of those collisions, 27 were fatal and 646 were serious.

In 2025 police recorded 52 collisions, up 21% on 2024 (43).

Collisions since 1979
3,620
1,025th highest of 2,813 postcode districts
Casualties
4,597
1.27 per collision
Fatal collisions
27
30 people killed
Serious collisions
646
706 seriously injured
Collisions in 2025
52
Up 21% on 2024
Casualties in 2025
63
Up 13% on 2024

Road collision statistics for WD18

Collisions by severity, 1979 to 2025

  • Fatal270.7%
  • Serious64618%
  • Slight2,94781%

What the data shows

  • WD18 had 425 collisions from 2016 to 2025, 22% fewer than the 547 from 2006 to 2015.
  • 19% of collisions in WD18 were fatal or serious, against 20% across Great Britain.
  • 607 children under 16 were killed or injured in WD18, 13% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 32% of collisions in WD18.

Where WD18 ranks among 2,813 postcode districts

Most collisions
1,025th
Most casualties
1,123rd
Most fatal collisions
1,946th
Most serious collisions
1,080th

Collisions by day of the week

  • Monday501 (14%)
  • Tuesday545 (15%)
  • Wednesday533 (15%)
  • Thursday573 (16%)
  • Friday646 (18%)
  • Saturday482 (13%)
  • Sunday340 (9.4%)

Light conditions

  • Daylight2,612 (72%)
  • Dark, street lights lit918 (25%)
  • Dark, lighting unknown38 (1%)
  • Dark, no street lighting35 (1%)
  • Dark, street lights unlit17 (0.5%)

Type of road

  • Single carriageway2,757 (76%)
  • One way street or slip road490 (14%)
  • Dual carriageway250 (6.9%)
  • Roundabout104 (2.9%)
  • Not recorded19 (0.5%)

Speed limit at the scene

  • 20 mph42 (1.2%)
  • 30 mph3,438 (95%)
  • 40 mph36 (1%)
  • 50 mph3 (0.1%)
  • 60 mph98 (2.7%)
  • 70 mph3 (0.1%)

Weather at the time

  • Fine, no high winds2,944 (81%)
  • Raining, no high winds458 (13%)
  • Raining with high winds35 (1%)
  • Fine with high winds34 (0.9%)
  • Snowing, no high winds20 (0.6%)
  • Fog or mist19 (0.5%)
  • Snowing with high winds6 (0.2%)
  • Other56 (1.5%)
  • Not recorded48 (1.3%)

Who was hurt

  • Car occupant2,304 (50%)
  • Pedestrian993 (22%)
  • Motorcyclist578 (13%)
  • Cyclist484 (11%)
  • Van occupant83 (1.8%)
  • Bus or coach occupant69 (1.5%)
  • Taxi or private hire car occupant41 (0.9%)
  • Goods vehicle occupant (over 3.5 tonnes)19 (0.4%)
  • Other vehicle occupant12 (0.3%)
  • Minibus occupant7 (0.2%)
  • Other4 (0.1%)
  • Not recorded3 (0.1%)

Source: Department for Transport, STATS19 road safety data

WD18 road accidents by year

Collisions and casualties in WD18, 1979 to 2025

Collisions in WD18 peaked at 129 in 1997; 2025 had 52.

  • Collisions
  • Collisions in 2025: 52
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20255263
20244356
20234761
20223239
20212528
20203138
20193648
20184964
20175368
20165780
20155973
20145462
20134559
20125563
20115370
20104451
20095980
20085079
20075669
20067286
200571104
20046679
200378105
200290129
200187112
200098133
1999115134
1998105140
1997129168
1996114150
199597141
199494133
199395128
199293122
199190106
19908295
198999121
1988109129
1987118139
1986112143
1985108130
1984104123
198395109
1982120145
198191111
198095119
197993112

Map of recent crashes in WD18

Map of the 24 most recent crashes in WD18

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in WD18

The 24 most recent collisions in WD18 happened between 5 July and 31 December 2025.

Severity

Crashes by road in WD18

The A4145 has the most collisions in WD18, 616 of 3,620 (17%), followed by the A412 (568).

Collisions in WD18 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA41456168044124
2ndA4125687226111
3rdA4178557742590
4thA411330435365
5thA41464400

Council areas covering WD18

Collisions in WD18 were recorded in 2 council areas. Watford has 3,435 of 3,620 (95%).

Collisions in WD18 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stWatford3,4354,33125608
2ndThree Rivers180258237

Towns in WD18

Collisions in WD18 were recorded in 2 towns, led by Watford, Watford (3,375) and Rickmansworth (5).