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CrashStats

B462 accidents: crash map and statistics

Police recorded 670 collisions on the B462 from 1979 to 2025, with 944 casualties. Of those crashes, 7 were fatal and 98 serious, and 7 people were killed.

In 2025 there were 6 collisions on the B462, down 45% from 11 in 2024, with 7 casualties.

Collisions since 1979
670
1,553rd highest of 4,923 roads
Casualties
944
1.41 per collision
Fatal collisions
7
7 people killed
Serious collisions
98
119 seriously injured
Collisions in 2025
6
Down 45% on 2024
Casualties in 2025
7
Down 53% on 2024

Crash severity on the B462

On the B462, 1% of collisions were fatal and 15% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal71%
  • Serious9815%
  • Slight56584%

Where the B462 ranks among 4,923 roads

Most collisions
1,553rd
Most casualties
1,499th
Most fatal collisions
2,103rd
Most serious collisions
1,948th

B462 accidents by year

Collisions on the B462 peaked at 24 in 1999 and were down to 6 in 2025.

Collisions and casualties on the B462, 1979 to 2025

  • Collisions
  • Collisions in 2025: 6
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202567
20241115
20231115
20221218
2021814
202067
201966
201856
2017912
20161523
20151314
20141014
20131319
20121420
20111520
20101420
20091827
20081016
20071419
20061422
20051426
20041518
20032237
20022240
20012336
20001420
19992433
19982025
19972023
19962431
19952228
19941627
19931122
19921315
19911619
19902128
19892229
19881820
19871519
1986810
19851324
19841417
198399
1982912
19811620
19801219
19791323

When crashes happen on the B462

Thursday has the most collisions on the B462 (123), and 3pm to 6pm is the busiest time of day (167).

Collisions by day of the week

  • Monday96 (14%)
  • Tuesday82 (12%)
  • Wednesday108 (16%)
  • Thursday123 (18%)
  • Friday99 (15%)
  • Saturday99 (15%)
  • Sunday63 (9.4%)

Collisions by time of day

  • Midnight to 3am16 (2.4%)
  • 3am to 6am7 (1%)
  • 6am to 9am96 (14%)
  • 9am to noon97 (14%)
  • Noon to 3pm119 (18%)
  • 3pm to 6pm167 (25%)
  • 6pm to 9pm107 (16%)
  • 9pm to midnight61 (9.1%)

Collisions by month

  • January57 (8.5%)
  • February65 (9.7%)
  • March63 (9.4%)
  • April49 (7.3%)
  • May59 (8.8%)
  • June53 (7.9%)
  • July49 (7.3%)
  • August53 (7.9%)
  • September51 (7.6%)
  • October59 (8.8%)
  • November54 (8.1%)
  • December58 (8.7%)

Light conditions at the time

  • Daylight514 (77%)
  • Dark, street lights lit139 (21%)
  • Dark, lighting unknown7 (1%)
  • Dark, street lights unlit7 (1%)
  • Dark, no street lighting3 (0.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B462 crashes

On the B462, 73% of collisions happened where the speed limit was 30 mph and 63% on a dry road surface.

Speed limit at the scene

  • 30 mph487 (73%)
  • 40 mph11 (1.6%)
  • 50 mph9 (1.3%)
  • 60 mph155 (23%)
  • 70 mph8 (1.2%)

Weather at the time

  • Fine, no high winds491 (73%)
  • Raining, no high winds102 (15%)
  • Fine with high winds8 (1.2%)
  • Fog or mist5 (0.7%)
  • Other58 (8.7%)
  • Not recorded6 (0.9%)

Road surface

  • Dry423 (63%)
  • Wet or damp230 (34%)
  • Frost or ice7 (1%)
  • Snow5 (0.7%)
  • Not recorded5 (0.7%)

Type of road

  • Single carriageway559 (83%)
  • Roundabout62 (9.3%)
  • One way street or slip road18 (2.7%)
  • Dual carriageway7 (1%)
  • Not recorded24 (3.6%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B462 crashes

Car occupants make up 74% of the people killed or injured on the B462, followed by motorcyclists (12%).

Casualties by road user

  • Car occupant695 (74%)
  • Motorcyclist110 (12%)
  • Cyclist49 (5.2%)
  • Pedestrian38 (4%)
  • Bus or coach occupant17 (1.8%)
  • Van occupant16 (1.7%)
  • Other vehicle occupant9 (1%)
  • Other10 (1.1%)

Vehicles involved

  • Car1,077 (80%)
  • Motorcycle111 (8.3%)
  • Van or goods vehicle up to 3.5 tonnes56 (4.2%)
  • Pedal cycle51 (3.8%)
  • Goods vehicle over 3.5 tonnes16 (1.2%)
  • Other vehicle12 (0.9%)
  • Other16 (1.2%)
  • Not recorded1 (0.1%)

Casualties by age

  • 0 to 510 (1.1%)
  • 6 to 1016 (1.7%)
  • 11 to 1546 (4.9%)
  • 16 to 20157 (17%)
  • 21 to 25125 (13%)
  • 26 to 35200 (21%)
  • 36 to 45137 (15%)
  • 46 to 55107 (11%)
  • 56 to 6562 (6.6%)
  • 66 to 7539 (4.1%)
  • Over 7518 (1.9%)
  • Not recorded27 (2.9%)

Drivers, passengers and pedestrians

  • Driver or rider670 (71%)
  • Passenger236 (25%)
  • Pedestrian38 (4%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B462

Map of the 25 most recent crashes on the B462

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

  • 25 crashes
  • Serious
  • Slight

B462 crashes by council area

Collisions on the B462 were recorded in 3 council areas. Hertsmere has the most, with 649, followed by Watford (14) and Barnet (4).

Collisions on the B462 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stHertsmere649904695
2ndWatford143103
3rdBarnet4500

B462 crashes by town

Collisions on the B462 were recorded in 3 towns and built-up areas, led by Bushey (217) and Radlett (117).

Recent crashes on the B462

These are the 25 most recent collisions on the B462, from 23 March 2023 to 16 December 2025.

Severity