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CrashStats

A466 accidents: crash map and statistics

Police recorded 1,109 collisions on the A466 from 1979 to 2025, with 1,660 casualties. Of those crashes, 45 were fatal and 290 serious, and 51 people were killed.

In 2025 there were 10 collisions on the A466, down 17% from 12 in 2024, with 13 casualties.

Collisions since 1979
1,109
982nd highest of 4,923 roads
Casualties
1,660
1.50 per collision
Fatal collisions
45
51 people killed
Serious collisions
290
369 seriously injured
Collisions in 2025
10
Down 17% on 2024
Casualties in 2025
13
Down 19% on 2024

Crash severity on the A466

On the A466, 4.1% of collisions were fatal and 26% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal454.1%
  • Serious29026%
  • Slight77470%

Where the A466 ranks among 4,923 roads

Most collisions
982nd
Most casualties
892nd
Most fatal collisions
461st
Most serious collisions
743rd

A466 accidents by year

Collisions on the A466 peaked at 52 in 1981 and were down to 10 in 2025.

Collisions and casualties on the A466, 1979 to 2025

  • Collisions
  • Collisions in 2025: 10
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251013
20241216
202346
20221214
20211013
202057
20191216
201889
201756
201659
20151520
20141321
20131622
20121518
20111114
20101418
20091213
20081623
20071517
20062432
20052837
20043661
20034160
20023654
20012341
20003757
19993447
19983445
19972635
19962128
19953055
19942131
19933451
19923143
19913650
19903265
19892743
19882537
19873446
19864363
19853264
19843559
19833658
19822636
19815278
19802556
19794053

When crashes happen on the A466

Sunday has the most collisions on the A466 (230), and 3pm to 6pm is the busiest time of day (283).

Collisions by day of the week

  • Monday175 (16%)
  • Tuesday124 (11%)
  • Wednesday126 (11%)
  • Thursday136 (12%)
  • Friday153 (14%)
  • Saturday165 (15%)
  • Sunday230 (21%)

Collisions by time of day

  • Midnight to 3am36 (3.2%)
  • 3am to 6am14 (1.3%)
  • 6am to 9am141 (13%)
  • 9am to noon179 (16%)
  • Noon to 3pm183 (17%)
  • 3pm to 6pm283 (26%)
  • 6pm to 9pm167 (15%)
  • 9pm to midnight106 (9.6%)

Collisions by month

  • January79 (7.1%)
  • February68 (6.1%)
  • March85 (7.7%)
  • April101 (9.1%)
  • May98 (8.8%)
  • June108 (9.7%)
  • July99 (8.9%)
  • August102 (9.2%)
  • September111 (10%)
  • October90 (8.1%)
  • November99 (8.9%)
  • December69 (6.2%)

Light conditions at the time

  • Daylight825 (74%)
  • Dark, no street lighting187 (17%)
  • Dark, street lights lit86 (7.8%)
  • Dark, lighting unknown7 (0.6%)
  • Dark, street lights unlit4 (0.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A466 crashes

On the A466, 64% of collisions happened where the speed limit was 60 mph and 60% on a dry road surface.

Speed limit at the scene

  • 20 mph4 (0.4%)
  • 30 mph267 (24%)
  • 40 mph95 (8.6%)
  • 50 mph15 (1.4%)
  • 60 mph706 (64%)
  • 70 mph22 (2%)

Weather at the time

  • Fine, no high winds833 (75%)
  • Raining, no high winds167 (15%)
  • Raining with high winds21 (1.9%)
  • Fog or mist16 (1.4%)
  • Other62 (5.6%)
  • Not recorded10 (0.9%)

Road surface

  • Dry669 (60%)
  • Wet or damp393 (35%)
  • Frost or ice34 (3.1%)
  • Flood over 3cm deep7 (0.6%)
  • Snow5 (0.5%)
  • Mud1 (0.1%)

Type of road

  • Single carriageway988 (89%)
  • Roundabout70 (6.3%)
  • Dual carriageway27 (2.4%)
  • One way street or slip road22 (2%)
  • Not recorded2 (0.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A466 crashes

Car occupants make up 67% of the people killed or injured on the A466, followed by motorcyclists (17%).

Casualties by road user

  • Car occupant1,105 (67%)
  • Motorcyclist281 (17%)
  • Pedestrian97 (5.8%)
  • Cyclist56 (3.4%)
  • Bus or coach occupant35 (2.1%)
  • Van occupant35 (2.1%)
  • Goods vehicle occupant (over 3.5 tonnes)21 (1.3%)
  • Other30 (1.8%)

Vehicles involved

  • Car1,364 (72%)
  • Motorcycle267 (14%)
  • Goods vehicle over 3.5 tonnes83 (4.4%)
  • Van or goods vehicle up to 3.5 tonnes74 (3.9%)
  • Pedal cycle58 (3%)
  • Bus or coach22 (1.2%)
  • Other vehicle18 (0.9%)
  • Other17 (0.9%)

Casualties by age

  • 0 to 520 (1.2%)
  • 6 to 1052 (3.1%)
  • 11 to 1579 (4.8%)
  • 16 to 20287 (17%)
  • 21 to 25230 (14%)
  • 26 to 35267 (16%)
  • 36 to 45258 (16%)
  • 46 to 55180 (11%)
  • 56 to 65136 (8.2%)
  • 66 to 7599 (6%)
  • Over 7549 (3%)
  • Not recorded3 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider1,021 (62%)
  • Passenger542 (33%)
  • Pedestrian97 (5.8%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A466

Map of the 25 most recent crashes on the A466

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

  • 25 crashes
  • Serious
  • Slight

A466 crashes by council area

Collisions on the A466 were recorded in 3 council areas. Monmouthshire has the most, with 833, followed by Herefordshire (188) and Forest of Dean (86).

Collisions on the A466 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stMonmouthshire8331,22137206
2ndHerefordshire188294556
3rdForest of Dean86142328

A466 crashes by town

Collisions on the A466 were recorded in 2 towns and built-up areas, led by Monmouth (115) and Chepstow (78).

Recent crashes on the A466

These are the 25 most recent collisions on the A466, from 2 April 2023 to 1 December 2025.

Severity