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CrashStats

B4354 accidents: crash map and statistics

Police recorded 111 collisions on the B4354 from 1979 to 2025, with 168 casualties. Of those crashes, 4 were fatal and 27 serious, and 4 people were killed.

In 2025 there were 3 collisions on the B4354, up 200% from 1 in 2024, with 4 casualties.

Collisions since 1979
111
3,929th highest of 4,923 roads
Casualties
168
1.51 per collision
Fatal collisions
4
4 people killed
Serious collisions
27
37 seriously injured
Collisions in 2025
3
Up 200% on 2024
Casualties in 2025
4
Up 300% on 2024

Crash severity on the B4354

On the B4354, 3.6% of collisions were fatal and 24% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal43.6%
  • Serious2724%
  • Slight8072%

Where the B4354 ranks among 4,923 roads

Most collisions
3,929th
Most casualties
3,818th
Most fatal collisions
2,815th
Most serious collisions
3,732nd

B4354 accidents by year

Collisions on the B4354 peaked at 7 in 2002 and were down to 3 in 2025.

Collisions and casualties on the B4354, 1979 to 2025

  • Collisions
  • Collisions in 2025: 3
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202534
202411
202311
202223
202111
202011
201922
201800
201733
201613
201500
201434
201311
201212
201122
201027
200900
200847
200734
2006611
200523
200423
200324
2002710
200168
200047
199959
199800
199722
199625
199534
199433
199356
199247
199122
199022
198900
198822
198746
198647
198512
198400
198311
1982510
198123
198033
197912

When crashes happen on the B4354

Friday has the most collisions on the B4354 (25), and 3pm to 6pm is the busiest time of day (28).

Collisions by day of the week

  • Monday19 (17%)
  • Tuesday15 (14%)
  • Wednesday17 (15%)
  • Thursday7 (6.3%)
  • Friday25 (23%)
  • Saturday20 (18%)
  • Sunday8 (7.2%)

Collisions by time of day

  • Midnight to 3am4 (3.6%)
  • 3am to 6am0 (0%)
  • 6am to 9am19 (17%)
  • 9am to noon12 (11%)
  • Noon to 3pm18 (16%)
  • 3pm to 6pm28 (25%)
  • 6pm to 9pm17 (15%)
  • 9pm to midnight13 (12%)

Collisions by month

  • January7 (6.3%)
  • February6 (5.4%)
  • March10 (9%)
  • April8 (7.2%)
  • May5 (4.5%)
  • June10 (9%)
  • July18 (16%)
  • August4 (3.6%)
  • September12 (11%)
  • October8 (7.2%)
  • November13 (12%)
  • December10 (9%)

Light conditions at the time

  • Daylight77 (69%)
  • Dark, no street lighting26 (23%)
  • Dark, street lights lit6 (5.4%)
  • Dark, lighting unknown2 (1.8%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4354 crashes

On the B4354, 66% of collisions happened where the speed limit was 60 mph and 59% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.9%)
  • 30 mph27 (24%)
  • 40 mph5 (4.5%)
  • 50 mph1 (0.9%)
  • 60 mph73 (66%)
  • 70 mph4 (3.6%)

Weather at the time

  • Fine, no high winds88 (79%)
  • Raining, no high winds14 (13%)
  • Raining with high winds3 (2.7%)
  • Fog or mist2 (1.8%)
  • Other4 (3.6%)

Road surface

  • Dry66 (59%)
  • Wet or damp42 (38%)
  • Frost or ice2 (1.8%)
  • Flood over 3cm deep1 (0.9%)

Type of road

  • Single carriageway110 (99%)
  • Dual carriageway1 (0.9%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4354 crashes

Car occupants make up 79% of the people killed or injured on the B4354, followed by pedestrians (8.9%).

Casualties by road user

  • Car occupant133 (79%)
  • Pedestrian15 (8.9%)
  • Motorcyclist7 (4.2%)
  • Cyclist5 (3%)
  • Van occupant5 (3%)
  • Bus or coach occupant1 (0.6%)
  • Goods vehicle occupant (weight unknown)1 (0.6%)
  • Other vehicle occupant1 (0.6%)

Vehicles involved

  • Car153 (81%)
  • Van or goods vehicle up to 3.5 tonnes10 (5.3%)
  • Motorcycle6 (3.2%)
  • Other vehicle6 (3.2%)
  • Pedal cycle5 (2.6%)
  • Agricultural vehicle3 (1.6%)
  • Bus or coach2 (1.1%)
  • Other4 (2.1%)

Casualties by age

  • 0 to 55 (3%)
  • 6 to 103 (1.8%)
  • 11 to 159 (5.4%)
  • 16 to 2042 (25%)
  • 21 to 2514 (8.3%)
  • 26 to 3519 (11%)
  • 36 to 4526 (15%)
  • 46 to 5514 (8.3%)
  • 56 to 6517 (10%)
  • 66 to 7512 (7.1%)
  • Over 757 (4.2%)

Drivers, passengers and pedestrians

  • Driver or rider99 (59%)
  • Passenger54 (32%)
  • Pedestrian15 (8.9%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4354

Map of the 25 most recent crashes on the B4354

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B4354 crashes by council area

Of the 111 collisions on the B4354, 110 were in Gwynedd.

Collisions on the B4354 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stGwynedd110167427

Recent crashes on the B4354

These are the 25 most recent collisions on the B4354, from 22 October 2008 to 31 July 2025.

Severity