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CrashStats

B4235 accidents: crash map and statistics

Police recorded 258 collisions on the B4235 from 1979 to 2025, with 407 casualties. Of those crashes, 7 were fatal and 76 serious, and 7 people were killed.

In 2025 there were 3 collisions on the B4235, down 25% from 4 in 2024, with 4 casualties.

Collisions since 1979
258
2,922nd highest of 4,923 roads
Casualties
407
1.58 per collision
Fatal collisions
7
7 people killed
Serious collisions
76
99 seriously injured
Collisions in 2025
3
Down 25% on 2024
Casualties in 2025
4
Down 20% on 2024

Crash severity on the B4235

On the B4235, 2.7% of collisions were fatal and 29% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal72.7%
  • Serious7629%
  • Slight17568%

Where the B4235 ranks among 4,923 roads

Most collisions
2,922nd
Most casualties
2,698th
Most fatal collisions
2,103rd
Most serious collisions
2,368th

B4235 accidents by year

Collisions on the B4235 peaked at 16 in 2002 and were down to 3 in 2025.

Collisions and casualties on the B4235, 1979 to 2025

  • Collisions
  • Collisions in 2025: 3
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202534
202445
202311
2022710
202144
202011
201968
201833
201711
201622
201513
201411
201334
201200
201123
201034
200924
200844
200725
200658
200557
20041115
200367
20021620
200177
2000811
199935
19981215
199779
199638
1995514
1994814
19931014
1992514
19911014
19901222
19891012
1988819
198756
198646
1985817
198411
1983621
1982813
1981817
1980711
19791013

When crashes happen on the B4235

Sunday has the most collisions on the B4235 (54), and 3pm to 6pm is the busiest time of day (68).

Collisions by day of the week

  • Monday34 (13%)
  • Tuesday29 (11%)
  • Wednesday22 (8.5%)
  • Thursday37 (14%)
  • Friday50 (19%)
  • Saturday32 (12%)
  • Sunday54 (21%)

Collisions by time of day

  • Midnight to 3am8 (3.1%)
  • 3am to 6am1 (0.4%)
  • 6am to 9am29 (11%)
  • 9am to noon45 (17%)
  • Noon to 3pm41 (16%)
  • 3pm to 6pm68 (26%)
  • 6pm to 9pm42 (16%)
  • 9pm to midnight24 (9.3%)

Collisions by month

  • January20 (7.8%)
  • February14 (5.4%)
  • March13 (5%)
  • April21 (8.1%)
  • May25 (9.7%)
  • June28 (11%)
  • July28 (11%)
  • August17 (6.6%)
  • September33 (13%)
  • October19 (7.4%)
  • November17 (6.6%)
  • December23 (8.9%)

Light conditions at the time

  • Daylight200 (78%)
  • Dark, no street lighting55 (21%)
  • Dark, street lights lit2 (0.8%)
  • Dark, street lights unlit1 (0.4%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4235 crashes

On the B4235, 93% of collisions happened where the speed limit was 60 mph and 63% on a dry road surface.

Speed limit at the scene

  • 30 mph7 (2.7%)
  • 40 mph8 (3.1%)
  • 50 mph3 (1.2%)
  • 60 mph239 (93%)
  • 70 mph1 (0.4%)

Weather at the time

  • Fine, no high winds203 (79%)
  • Raining, no high winds28 (11%)
  • Raining with high winds6 (2.3%)
  • Snowing, no high winds4 (1.6%)
  • Other16 (6.2%)
  • Not recorded1 (0.4%)

Road surface

  • Dry162 (63%)
  • Wet or damp77 (30%)
  • Frost or ice14 (5.4%)
  • Snow4 (1.6%)
  • Oil or diesel1 (0.4%)

Type of road

  • Single carriageway257 (100%)
  • Dual carriageway1 (0.4%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4235 crashes

Car occupants make up 71% of the people killed or injured on the B4235, followed by motorcyclists (15%).

Casualties by road user

  • Car occupant288 (71%)
  • Motorcyclist61 (15%)
  • Cyclist11 (2.7%)
  • Pedestrian11 (2.7%)
  • Van occupant11 (2.7%)
  • Minibus occupant8 (2%)
  • Bus or coach occupant6 (1.5%)
  • Other11 (2.7%)

Vehicles involved

  • Car299 (74%)
  • Motorcycle59 (15%)
  • Goods vehicle over 3.5 tonnes15 (3.7%)
  • Pedal cycle12 (3%)
  • Van or goods vehicle up to 3.5 tonnes7 (1.7%)
  • Other vehicle6 (1.5%)
  • Taxi or private hire car3 (0.7%)
  • Other5 (1.2%)

Casualties by age

  • 0 to 511 (2.7%)
  • 6 to 1024 (5.9%)
  • 11 to 1518 (4.4%)
  • 16 to 2075 (18%)
  • 21 to 2549 (12%)
  • 26 to 3555 (14%)
  • 36 to 4547 (12%)
  • 46 to 5539 (9.6%)
  • 56 to 6534 (8.4%)
  • 66 to 7538 (9.3%)
  • Over 7514 (3.4%)
  • Not recorded3 (0.7%)

Drivers, passengers and pedestrians

  • Driver or rider259 (64%)
  • Passenger137 (34%)
  • Pedestrian11 (2.7%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4235

Map of the 25 most recent crashes on the B4235

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

  • 25 crashes
  • Serious
  • Slight

B4235 crashes by council area

Collisions on the B4235 were recorded in 2 council areas. Monmouthshire has the most, with 255, followed by Pembrokeshire (3).

Collisions on the B4235 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stMonmouthshire255402776
2ndPembrokeshire3500

Recent crashes on the B4235

These are the 25 most recent collisions on the B4235, from 27 February 2019 to 1 December 2025.

Severity