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CrashStats

B4231 accidents: crash map and statistics

Police recorded 244 collisions on the B4231 from 1979 to 2025, with 338 casualties. Of those crashes, 9 were fatal and 68 serious, and 10 people were killed.

In 2025 there were 3 collisions on the B4231, up 200% from 1 in 2024, with 3 casualties.

Collisions since 1979
244
2,981st highest of 4,923 roads
Casualties
338
1.39 per collision
Fatal collisions
9
10 people killed
Serious collisions
68
81 seriously injured
Collisions in 2025
3
Up 200% on 2024
Casualties in 2025
3
Up 200% on 2024

Crash severity on the B4231

On the B4231, 3.7% of collisions were fatal and 28% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal93.7%
  • Serious6828%
  • Slight16768%

Where the B4231 ranks among 4,923 roads

Most collisions
2,981st
Most casualties
2,958th
Most fatal collisions
1,807th
Most serious collisions
2,523rd

B4231 accidents by year

Collisions on the B4231 peaked at 14 in 1984 and were down to 3 in 2025.

Collisions and casualties on the B4231, 1979 to 2025

  • Collisions
  • Collisions in 2025: 3
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202533
202411
202311
202234
202145
202034
201923
201800
201745
201600
201514
201422
201322
201223
201158
201034
200968
200846
200744
20061016
20051011
2004610
200345
200245
200178
2000510
199934
1998810
1997711
199666
199568
199424
199357
199247
199133
1990917
19891013
1988910
19871216
1986611
198589
19841424
198322
198244
19811012
19801420
197968

When crashes happen on the B4231

Saturday has the most collisions on the B4231 (46), and 3pm to 6pm is the busiest time of day (53).

Collisions by day of the week

  • Monday30 (12%)
  • Tuesday31 (13%)
  • Wednesday37 (15%)
  • Thursday33 (14%)
  • Friday42 (17%)
  • Saturday46 (19%)
  • Sunday25 (10%)

Collisions by time of day

  • Midnight to 3am14 (5.7%)
  • 3am to 6am2 (0.8%)
  • 6am to 9am27 (11%)
  • 9am to noon43 (18%)
  • Noon to 3pm38 (16%)
  • 3pm to 6pm53 (22%)
  • 6pm to 9pm39 (16%)
  • 9pm to midnight28 (11%)

Collisions by month

  • January20 (8.2%)
  • February19 (7.8%)
  • March14 (5.7%)
  • April20 (8.2%)
  • May17 (7%)
  • June29 (12%)
  • July23 (9.4%)
  • August24 (9.8%)
  • September16 (6.6%)
  • October24 (9.8%)
  • November24 (9.8%)
  • December14 (5.7%)

Light conditions at the time

  • Daylight173 (71%)
  • Dark, no street lighting48 (20%)
  • Dark, street lights lit21 (8.6%)
  • Dark, lighting unknown2 (0.8%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4231 crashes

On the B4231, 56% of collisions happened where the speed limit was 60 mph and 63% on a dry road surface.

Speed limit at the scene

  • 20 mph2 (0.8%)
  • 30 mph96 (39%)
  • 40 mph3 (1.2%)
  • 50 mph5 (2%)
  • 60 mph137 (56%)
  • 70 mph1 (0.4%)

Weather at the time

  • Fine, no high winds187 (77%)
  • Raining, no high winds34 (14%)
  • Raining with high winds6 (2.5%)
  • Fine with high winds4 (1.6%)
  • Other11 (4.5%)
  • Not recorded2 (0.8%)

Road surface

  • Dry154 (63%)
  • Wet or damp81 (33%)
  • Frost or ice5 (2%)
  • Snow3 (1.2%)
  • Flood over 3cm deep1 (0.4%)

Type of road

  • Single carriageway240 (98%)
  • Dual carriageway3 (1.2%)
  • One way street or slip road1 (0.4%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4231 crashes

Car occupants make up 71% of the people killed or injured on the B4231, followed by motorcyclists (13%).

Casualties by road user

  • Car occupant241 (71%)
  • Motorcyclist44 (13%)
  • Pedestrian25 (7.4%)
  • Cyclist16 (4.7%)
  • Goods vehicle occupant (over 3.5 tonnes)5 (1.5%)
  • Van occupant5 (1.5%)
  • Bus or coach occupant2 (0.6%)

Vehicles involved

  • Car329 (76%)
  • Motorcycle45 (10%)
  • Goods vehicle over 3.5 tonnes23 (5.3%)
  • Pedal cycle16 (3.7%)
  • Van or goods vehicle up to 3.5 tonnes10 (2.3%)
  • Other vehicle4 (0.9%)
  • Bus or coach3 (0.7%)
  • Minibus1 (0.2%)

Casualties by age

  • 0 to 56 (1.8%)
  • 6 to 106 (1.8%)
  • 11 to 1525 (7.4%)
  • 16 to 2082 (24%)
  • 21 to 2559 (17%)
  • 26 to 3551 (15%)
  • 36 to 4545 (13%)
  • 46 to 5523 (6.8%)
  • 56 to 6518 (5.3%)
  • 66 to 7514 (4.1%)
  • Over 759 (2.7%)

Drivers, passengers and pedestrians

  • Driver or rider217 (64%)
  • Passenger96 (28%)
  • Pedestrian25 (7.4%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4231

Map of the 25 most recent crashes on the B4231

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B4231 crashes by council area

Of the 244 collisions on the B4231, 242 were in Forest of Dean.

Collisions on the B4231 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stForest of Dean242335967

B4231 crashes by town

Of the 244 collisions on the B4231, 66 were in the built-up area of Lydney.

Recent crashes on the B4231

These are the 25 most recent collisions on the B4231, from 18 November 2013 to 14 November 2025.

Severity