Skip to main content
CrashStats

A4087 accidents: crash map and statistics

Police recorded 345 collisions on the A4087 from 1979 to 2025, with 471 casualties. Of those crashes, 7 were fatal and 59 serious, and 8 people were killed.

In 2025 there was 1 collision on the A4087, level with 2024, with 1 casualty.

Collisions since 1979
345
2,511th highest of 4,923 roads
Casualties
471
1.37 per collision
Fatal collisions
7
8 people killed
Serious collisions
59
73 seriously injured
Collisions in 2025
1
Level with 2024
Casualties in 2025
1
Down 67% on 2024

Crash severity on the A4087

On the A4087, 2% of collisions were fatal and 17% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal72%
  • Serious5917%
  • Slight27981%

Where the A4087 ranks among 4,923 roads

Most collisions
2,511th
Most casualties
2,489th
Most fatal collisions
2,103rd
Most serious collisions
2,723rd

A4087 accidents by year

Collisions on the A4087 peaked at 17 in 1987 and were down to 1 in 2025.

Collisions and casualties on the A4087, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202413
202367
202235
202124
202011
201968
201857
201711
201622
201567
2014710
2013914
201266
201145
201058
20091116
2008910
2007710
200622
200511
20041012
2003810
2002910
2001911
2000712
1999612
19981115
19971015
199689
1995916
19941217
199399
1992810
199199
19901014
1989915
19881013
19871724
1986810
198589
198458
19831111
19821316
19811214
19801324
1979918

When crashes happen on the A4087

Friday has the most collisions on the A4087 (73), and 3pm to 6pm is the busiest time of day (102).

Collisions by day of the week

  • Monday41 (12%)
  • Tuesday43 (12%)
  • Wednesday38 (11%)
  • Thursday56 (16%)
  • Friday73 (21%)
  • Saturday67 (19%)
  • Sunday27 (7.8%)

Collisions by time of day

  • Midnight to 3am12 (3.5%)
  • 3am to 6am4 (1.2%)
  • 6am to 9am30 (8.7%)
  • 9am to noon50 (14%)
  • Noon to 3pm66 (19%)
  • 3pm to 6pm102 (30%)
  • 6pm to 9pm53 (15%)
  • 9pm to midnight28 (8.1%)

Collisions by month

  • January35 (10%)
  • February22 (6.4%)
  • March34 (9.9%)
  • April31 (9%)
  • May11 (3.2%)
  • June29 (8.4%)
  • July22 (6.4%)
  • August30 (8.7%)
  • September32 (9.3%)
  • October33 (9.6%)
  • November31 (9%)
  • December35 (10%)

Light conditions at the time

  • Daylight242 (70%)
  • Dark, street lights lit77 (22%)
  • Dark, no street lighting20 (5.8%)
  • Dark, lighting unknown5 (1.4%)
  • Dark, street lights unlit1 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4087 crashes

On the A4087, 66% of collisions happened where the speed limit was 30 mph and 58% on a dry road surface.

Speed limit at the scene

  • 20 mph1 (0.3%)
  • 30 mph227 (66%)
  • 40 mph38 (11%)
  • 60 mph75 (22%)
  • 70 mph4 (1.2%)

Weather at the time

  • Fine, no high winds237 (69%)
  • Raining, no high winds69 (20%)
  • Raining with high winds14 (4.1%)
  • Fine with high winds9 (2.6%)
  • Snowing, no high winds2 (0.6%)
  • Other14 (4.1%)

Road surface

  • Dry199 (58%)
  • Wet or damp143 (41%)
  • Frost or ice2 (0.6%)
  • Flood over 3cm deep1 (0.3%)

Type of road

  • Single carriageway280 (81%)
  • Roundabout37 (11%)
  • One way street or slip road21 (6.1%)
  • Dual carriageway6 (1.7%)
  • Not recorded1 (0.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4087 crashes

Car occupants make up 62% of the people killed or injured on the A4087, followed by pedestrians (16%).

Casualties by road user

  • Car occupant290 (62%)
  • Pedestrian74 (16%)
  • Motorcyclist57 (12%)
  • Cyclist22 (4.7%)
  • Van occupant8 (1.7%)
  • Bus or coach occupant7 (1.5%)
  • Taxi or private hire car occupant7 (1.5%)
  • Other6 (1.3%)

Vehicles involved

  • Car482 (77%)
  • Motorcycle57 (9.1%)
  • Van or goods vehicle up to 3.5 tonnes26 (4.1%)
  • Pedal cycle24 (3.8%)
  • Goods vehicle over 3.5 tonnes19 (3%)
  • Bus or coach8 (1.3%)
  • Taxi or private hire car5 (0.8%)
  • Other6 (1%)

Casualties by age

  • 0 to 57 (1.5%)
  • 6 to 1028 (5.9%)
  • 11 to 1524 (5.1%)
  • 16 to 2083 (18%)
  • 21 to 2565 (14%)
  • 26 to 3591 (19%)
  • 36 to 4542 (8.9%)
  • 46 to 5547 (10%)
  • 56 to 6541 (8.7%)
  • 66 to 7524 (5.1%)
  • Over 7518 (3.8%)
  • Not recorded1 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider258 (55%)
  • Passenger139 (30%)
  • Pedestrian74 (16%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4087

Map of the 25 most recent crashes on the A4087

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A4087 crashes by council area

Of the 345 collisions on the A4087, 341 were in Gwynedd.

Collisions on the A4087 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stGwynedd341466657

A4087 crashes by town

Of the 345 collisions on the A4087, 242 were in the built-up area of Bangor.

Recent crashes on the A4087

These are the 25 most recent collisions on the A4087, from 27 July 2018 to 22 June 2025.

Severity