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CrashStats

Caernarfon road accidents: crash map and statistics

Police recorded 791 road traffic collisions in Caernarfon, Gwynedd, from 1979 to 2025, and 1,007 people were killed or injured in them. Of those collisions, 9 were fatal and 122 were serious.

In 2025 police recorded 4 collisions, down from 6 in 2024.

Collisions since 1979
791
881st highest of 2,851 towns
Casualties
1,007
1.27 per collision
Fatal collisions
9
10 people killed
Serious collisions
122
145 seriously injured
Collisions in 2025
4
6 in 2024
Casualties in 2025
4
7 in 2024

Road collision statistics for Caernarfon

Collisions by severity, 1979 to 2025

  • Fatal91.1%
  • Serious12215%
  • Slight66083%

What the data shows

  • Caernarfon had 65 collisions from 2016 to 2025, 55% fewer than the 144 from 2006 to 2015.
  • 17% of collisions in Caernarfon were fatal or serious, against 20% across Great Britain.
  • 236 children under 16 were killed or injured in Caernarfon, 23% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 31% of collisions in Caernarfon.

Where Caernarfon ranks among 2,851 towns

Most collisions
881st
Most casualties
877th
Most fatal collisions
915th
Most serious collisions
994th

Collisions by day of the week

  • Monday100 (13%)
  • Tuesday112 (14%)
  • Wednesday125 (16%)
  • Thursday111 (14%)
  • Friday138 (17%)
  • Saturday132 (17%)
  • Sunday73 (9.2%)

Light conditions

  • Daylight625 (79%)
  • Dark, street lights lit137 (17%)
  • Dark, no street lighting13 (1.6%)
  • Dark, lighting unknown10 (1.3%)
  • Dark, street lights unlit6 (0.8%)

Type of road

  • Single carriageway598 (76%)
  • One way street or slip road121 (15%)
  • Roundabout55 (7%)
  • Dual carriageway9 (1.1%)
  • Not recorded8 (1%)

Speed limit at the scene

  • 20 mph12 (1.5%)
  • 30 mph697 (88%)
  • 40 mph56 (7.1%)
  • 60 mph24 (3%)
  • 70 mph2 (0.3%)

Weather at the time

  • Fine, no high winds621 (79%)
  • Raining, no high winds94 (12%)
  • Raining with high winds22 (2.8%)
  • Fine with high winds14 (1.8%)
  • Snowing, no high winds2 (0.3%)
  • Snowing with high winds1 (0.1%)
  • Other29 (3.7%)
  • Not recorded8 (1%)

Who was hurt

  • Car occupant450 (45%)
  • Pedestrian356 (35%)
  • Cyclist61 (6.1%)
  • Motorcyclist53 (5.3%)
  • Bus or coach occupant46 (4.6%)
  • Taxi or private hire car occupant15 (1.5%)
  • Van occupant15 (1.5%)
  • Goods vehicle occupant (over 3.5 tonnes)5 (0.5%)
  • Minibus occupant3 (0.3%)
  • Other vehicle occupant2 (0.2%)
  • Not recorded1 (0.1%)

Source: Department for Transport, STATS19 road safety data

Caernarfon road accidents by year

Collisions and casualties in Caernarfon, 1979 to 2025

Collisions in Caernarfon peaked at 33 in 1983; 2025 had 4.

  • Collisions
  • Collisions in 2025: 4
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202544
202467
202366
202244
202135
202055
2019911
20181113
201778
20161010
20151315
20141719
20131828
20121013
20111622
20101022
20091317
20081619
20071317
20061831
20051320
2004911
20031722
20021517
20011518
20001320
19991419
19982229
19972431
19961922
19951926
19942841
19932638
19922530
19912740
19902527
19892327
19882020
19872430
19861720
19851720
19842832
19833336
19821821
19813240
19802736
19793238

Map of recent crashes in Caernarfon

Map of the 24 most recent crashes in Caernarfon

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in Caernarfon

The 24 most recent collisions in Caernarfon happened between 30 November 2020 and 19 November 2025.

Severity

Crashes by road in Caernarfon

The A487 has the most collisions in Caernarfon, 233 of 791 (29%), followed by the A4086 (99).

Collisions in Caernarfon on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA487233338336
2ndA408699120117
3rdB43665887012
4thB4419515805
5thA4085323706

Council area for Caernarfon

Caernarfon is in Gwynedd, where police recorded 16,819 collisions from 1979 to 2025. Caernarfon accounts for 4.7% of them.

Postcode district for Caernarfon

All 791 collisions in Caernarfon were in the LL55 postcode district.