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CrashStats

B4545 accidents: crash map and statistics

Police recorded 308 collisions on the B4545 from 1979 to 2024, with 416 casualties. Of those crashes, 5 were fatal and 63 serious, and 5 people were killed.

No collisions were recorded on the B4545 in 2025, after 1 in 2024.

Collisions since 1979
308
2,652nd highest of 4,923 roads
Casualties
416
1.35 per collision
Fatal collisions
5
5 people killed
Serious collisions
63
67 seriously injured
Collisions in 2025
0
1 in 2024
Casualties in 2025
0
1 in 2024

Crash severity on the B4545

On the B4545, 1.6% of collisions were fatal and 20% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2024

  • Fatal51.6%
  • Serious6320%
  • Slight24078%

Where the B4545 ranks among 4,923 roads

Most collisions
2,652nd
Most casualties
2,663rd
Most fatal collisions
2,545th
Most serious collisions
2,629th

B4545 accidents by year

Collisions on the B4545 peaked at 18 in 1984; none were recorded in 2025.

Collisions and casualties on the B4545, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202500
202411
202311
202200
202124
202011
201911
201845
201711
201600
201546
201434
201347
201225
201133
201022
200911
200848
200738
200634
200599
200444
200368
200222
2001917
20001623
199977
199866
199768
199657
1995912
1994811
199377
199244
199177
19901217
19891216
19881417
19871214
19861422
1985919
19841821
19831217
19821421
19811520
19801314
19791824

When crashes happen on the B4545

Saturday has the most collisions on the B4545 (68), and 6pm to 9pm is the busiest time of day (63).

Collisions by day of the week

  • Monday39 (13%)
  • Tuesday40 (13%)
  • Wednesday25 (8.1%)
  • Thursday53 (17%)
  • Friday50 (16%)
  • Saturday68 (22%)
  • Sunday33 (11%)

Collisions by time of day

  • Midnight to 3am21 (6.8%)
  • 3am to 6am5 (1.6%)
  • 6am to 9am13 (4.2%)
  • 9am to noon42 (14%)
  • Noon to 3pm53 (17%)
  • 3pm to 6pm59 (19%)
  • 6pm to 9pm63 (20%)
  • 9pm to midnight52 (17%)

Collisions by month

  • January29 (9.4%)
  • February22 (7.1%)
  • March17 (5.5%)
  • April22 (7.1%)
  • May38 (12%)
  • June22 (7.1%)
  • July25 (8.1%)
  • August39 (13%)
  • September26 (8.4%)
  • October16 (5.2%)
  • November17 (5.5%)
  • December35 (11%)

Light conditions at the time

  • Daylight192 (62%)
  • Dark, street lights lit94 (31%)
  • Dark, no street lighting17 (5.5%)
  • Dark, street lights unlit3 (1%)
  • Dark, lighting unknown2 (0.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4545 crashes

On the B4545, 78% of collisions happened where the speed limit was 30 mph and 66% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.3%)
  • 30 mph241 (78%)
  • 40 mph29 (9.4%)
  • 50 mph1 (0.3%)
  • 60 mph30 (9.7%)
  • 70 mph6 (1.9%)

Weather at the time

  • Fine, no high winds223 (72%)
  • Raining, no high winds42 (14%)
  • Fine with high winds16 (5.2%)
  • Raining with high winds10 (3.2%)
  • Other15 (4.9%)
  • Not recorded2 (0.6%)

Road surface

  • Dry204 (66%)
  • Wet or damp102 (33%)
  • Frost or ice2 (0.6%)

Type of road

  • Single carriageway302 (98%)
  • Dual carriageway5 (1.6%)
  • Roundabout1 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4545 crashes

Car occupants make up 59% of the people killed or injured on the B4545, followed by motorcyclists (16%).

Casualties by road user

  • Car occupant247 (59%)
  • Motorcyclist65 (16%)
  • Pedestrian64 (15%)
  • Cyclist29 (7%)
  • Bus or coach occupant5 (1.2%)
  • Van occupant3 (0.7%)
  • Taxi or private hire car occupant2 (0.5%)
  • Minibus occupant1 (0.2%)

Vehicles involved

  • Car372 (73%)
  • Motorcycle58 (11%)
  • Pedal cycle30 (5.9%)
  • Taxi or private hire car14 (2.8%)
  • Van or goods vehicle up to 3.5 tonnes10 (2%)
  • Bus or coach9 (1.8%)
  • Goods vehicle over 3.5 tonnes4 (0.8%)
  • Other10 (2%)

Casualties by age

  • 0 to 513 (3.1%)
  • 6 to 1028 (6.7%)
  • 11 to 1537 (8.9%)
  • 16 to 20112 (27%)
  • 21 to 2559 (14%)
  • 26 to 3561 (15%)
  • 36 to 4528 (6.7%)
  • 46 to 5525 (6%)
  • 56 to 6524 (5.8%)
  • 66 to 7519 (4.6%)
  • Over 7510 (2.4%)

Drivers, passengers and pedestrians

  • Driver or rider234 (56%)
  • Passenger118 (28%)
  • Pedestrian64 (15%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4545

Map of the 25 most recent crashes on the B4545

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

B4545 crashes by council area

All 308 collisions on the B4545 were in Isle of Anglesey.

Collisions on the B4545 in each area, 1979 to 2024
RankAreaCollisionsCasualtiesFatalSerious
1stIsle of Anglesey308416563

B4545 crashes by town

Collisions on the B4545 were recorded in 2 towns and built-up areas, led by Holyhead (86) and Valley (27).

Recent crashes on the B4545

These are the 25 most recent collisions on the B4545, from 29 December 2011 to 23 February 2024.

Severity