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CrashStats

CF46 road accidents: crash map and statistics

Police recorded 1,357 road traffic collisions in the CF46 postcode district, Merthyr Tydfil, from 1979 to 2025, and 1,913 people were killed or injured in them. Of those collisions, 17 were fatal and 217 were serious.

In 2025 police recorded 18 collisions, up from 9 in 2024.

Collisions since 1979
1,357
2,021st of 2,813 postcode districts, highest first
Casualties
1,913
1.41 per collision
Fatal collisions
17
17 people killed
Serious collisions
217
256 seriously injured
Collisions in 2025
18
9 in 2024
Casualties in 2025
24
11 in 2024

Road collision statistics for CF46

Collisions by severity, 1979 to 2025

  • Fatal171.3%
  • Serious21716%
  • Slight1,12383%

What the data shows

  • CF46 had 162 collisions from 2016 to 2025, 21% fewer than the 204 from 2006 to 2015.
  • 17% of collisions in CF46 were fatal or serious, against 20% across Great Britain.
  • 310 children under 16 were killed or injured in CF46, 16% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 38% of collisions in CF46.

Where CF46 ranks among 2,813 postcode districts

Most collisions
2,021st
Most casualties
2,028th
Most fatal collisions
2,230th
Most serious collisions
2,193rd

Collisions by day of the week

  • Monday157 (12%)
  • Tuesday174 (13%)
  • Wednesday202 (15%)
  • Thursday203 (15%)
  • Friday222 (16%)
  • Saturday228 (17%)
  • Sunday171 (13%)

Light conditions

  • Daylight920 (68%)
  • Dark, street lights lit283 (21%)
  • Dark, no street lighting87 (6.4%)
  • Dark, street lights unlit33 (2.4%)
  • Dark, lighting unknown29 (2.1%)
  • Not recorded5 (0.4%)

Type of road

  • Single carriageway1,155 (85%)
  • Dual carriageway101 (7.4%)
  • Roundabout59 (4.3%)
  • One way street or slip road14 (1%)
  • Not recorded28 (2.1%)

Speed limit at the scene

  • 10 mph2 (0.1%)
  • 15 mph1 (0.1%)
  • 20 mph12 (0.9%)
  • 30 mph915 (67%)
  • 40 mph72 (5.3%)
  • 50 mph38 (2.8%)
  • 60 mph247 (18%)
  • 70 mph69 (5.1%)
  • Not recorded1 (0.1%)

Weather at the time

  • Fine, no high winds993 (73%)
  • Raining, no high winds234 (17%)
  • Raining with high winds48 (3.5%)
  • Fine with high winds17 (1.3%)
  • Snowing, no high winds11 (0.8%)
  • Fog or mist6 (0.4%)
  • Snowing with high winds4 (0.3%)
  • Other22 (1.6%)
  • Not recorded22 (1.6%)

Who was hurt

  • Car occupant1,142 (60%)
  • Pedestrian320 (17%)
  • Motorcyclist174 (9.1%)
  • Bus or coach occupant110 (5.8%)
  • Cyclist79 (4.1%)
  • Van occupant40 (2.1%)
  • Minibus occupant18 (0.9%)
  • Goods vehicle occupant (over 3.5 tonnes)12 (0.6%)
  • Other vehicle occupant11 (0.6%)
  • Taxi or private hire car occupant6 (0.3%)
  • Not recorded1 (0.1%)

Source: Department for Transport, STATS19 road safety data

CF46 road accidents by year

Collisions and casualties in CF46, 1979 to 2025

Collisions in CF46 peaked at 49 in 1995; 2025 had 18.

  • Collisions
  • Collisions in 2025: 18
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251824
2024911
20231318
20221621
20211923
20201011
20192333
20181722
20172131
20161620
20151418
20142131
20132327
20122225
20111729
20102134
20091625
20082228
20071927
20062949
20053250
20042841
20034355
20023756
20012854
20004882
19993848
19982334
19973147
19963648
19954971
19943950
19933857
19923547
19913446
19904149
19894250
19883649
19873339
19862428
19852126
19844047
19834862
19824869
19814491
19803456
19794154

Map of recent crashes in CF46

Map of the 24 most recent crashes in CF46

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in CF46

The 24 most recent collisions in CF46 happened between 2 August 2024 and 20 December 2025.

Severity

Crashes by road in CF46

The A472 has the most collisions in CF46, 245 of 1,357 (18%), followed by the B4255 (205).

Collisions in CF46 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA472245382340
2ndB4255205282232
3rdA470166268134
4thA4054126181320
5thB425486118111
6thA4693401

Council areas covering CF46

Collisions in CF46 were recorded in 3 council areas. Merthyr Tydfil has 875 of 1,357 (64%).

Collisions in CF46 by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stMerthyr Tydfil8751,24010125
2ndCaerphilly446622787
3rdRhondda Cynon Taf354905

Towns in CF46

Collisions in CF46 were recorded in 3 towns, led by Treharris (265) and Nelson, Caerphilly (243).