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CrashStats

LL55 road accidents: crash map and statistics

Police recorded 2,599 road traffic collisions in the LL55 postcode district, Gwynedd, from 1979 to 2025, and 3,755 people were killed or injured in them. Of those collisions, 51 were fatal and 534 were serious.

In 2025 police recorded 15 collisions, up from 14 in 2024.

Collisions since 1979
2,599
1,476th of 2,813 postcode districts, highest first
Casualties
3,755
1.44 per collision
Fatal collisions
51
55 people killed
Serious collisions
534
680 seriously injured
Collisions in 2025
15
14 in 2024
Casualties in 2025
21
19 in 2024

Road collision statistics for LL55

Collisions by severity, 1979 to 2025

  • Fatal512%
  • Serious53421%
  • Slight2,01477%

What the data shows

  • LL55 had 218 collisions from 2016 to 2025, 50% fewer than the 438 from 2006 to 2015.
  • 23% of collisions in LL55 were fatal or serious, against 20% across Great Britain.
  • 593 children under 16 were killed or injured in LL55, 16% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 42% of collisions in LL55.

Where LL55 ranks among 2,813 postcode districts

Most collisions
1,476th
Most casualties
1,394th
Most fatal collisions
1,162nd
Most serious collisions
1,398th

Collisions by day of the week

  • Monday342 (13%)
  • Tuesday359 (14%)
  • Wednesday372 (14%)
  • Thursday332 (13%)
  • Friday442 (17%)
  • Saturday433 (17%)
  • Sunday319 (12%)

Light conditions

  • Daylight1,966 (76%)
  • Dark, street lights lit314 (12%)
  • Dark, no street lighting281 (11%)
  • Dark, lighting unknown26 (1%)
  • Dark, street lights unlit12 (0.5%)

Type of road

  • Single carriageway2,322 (89%)
  • One way street or slip road136 (5.2%)
  • Roundabout98 (3.8%)
  • Dual carriageway30 (1.2%)
  • Not recorded13 (0.5%)

Speed limit at the scene

  • 20 mph19 (0.7%)
  • 30 mph1,222 (47%)
  • 40 mph134 (5.2%)
  • 50 mph55 (2.1%)
  • 60 mph1,085 (42%)
  • 70 mph84 (3.2%)

Weather at the time

  • Fine, no high winds1,842 (71%)
  • Raining, no high winds446 (17%)
  • Raining with high winds95 (3.7%)
  • Fine with high winds58 (2.2%)
  • Snowing, no high winds13 (0.5%)
  • Fog or mist7 (0.3%)
  • Snowing with high winds5 (0.2%)
  • Other111 (4.3%)
  • Not recorded22 (0.8%)

Who was hurt

  • Car occupant2,382 (63%)
  • Pedestrian591 (16%)
  • Motorcyclist318 (8.5%)
  • Cyclist180 (4.8%)
  • Van occupant75 (2%)
  • Minibus occupant72 (1.9%)
  • Bus or coach occupant69 (1.8%)
  • Taxi or private hire car occupant32 (0.9%)
  • Goods vehicle occupant (over 3.5 tonnes)18 (0.5%)
  • Other vehicle occupant14 (0.4%)
  • Other3 (0.1%)
  • Not recorded1 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

LL55 road accidents by year

Collisions and casualties in LL55, 1979 to 2025

Collisions in LL55 peaked at 101 in 1981; 2025 had 15.

  • Collisions
  • Collisions in 2025: 15
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251521
20241419
20232332
20222123
20211014
20201314
20192732
20183650
20172846
20163142
20154247
20144252
20134567
20123747
20114360
20104371
20093955
20085066
20074769
20065080
20054778
20044370
20036488
20025585
20015477
200069111
199965102
199885127
199796149
19967298
199579117
199479118
199376126
199269101
199184133
19906999
198967104
19886890
19876689
19866587
19857599
198483121
19837291
19827099
1981101131
198083138
197987120

Map of recent crashes in LL55

Map of the 24 most recent crashes in LL55

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in LL55

The 24 most recent collisions in LL55 happened between 10 June 2024 and 19 November 2025.

Severity

Crashes by road in LL55

The A4086 has the most collisions in LL55, 604 of 2,599 (23%), followed by the A487 (480).

Collisions in LL55 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA408660491213146
2ndA4874807511177
3rdB4366201300540
4thA4085150207439
5thB4547113185624
6thA498105171533
7thB4419536106
8thA42444890116

Council areas covering LL55

Collisions in LL55 were recorded in 2 council areas. Gwynedd has 2,587 of 2,599 (99.5%).

Collisions in LL55 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stGwynedd2,5873,73250533
2ndConwy112211

Town in LL55

Of the 2,599 collisions in LL55, 791 (30%) were in Caernarfon.