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CrashStats

Merthyr Tydfil road accidents: crash map and statistics

Police recorded 6,783 road traffic collisions in Merthyr Tydfil from 1979 to 2025, and 9,704 people were killed or injured in them. Of those collisions, 120 were fatal and 926 were serious.

In 2025 police recorded 46 collisions, up 21% on 2024 (38), and casualties rose from 54 to 58.

Collisions, 1979 to 2025
6,783
10th lowest of 351 areas
Casualties
9,704
1.43 per collision
Fatal collisions
120
1.8% of collisions
Collisions in 2025
46
Up 21% on 2024

Crash severity in Merthyr Tydfil

1.8% of collisions in Merthyr Tydfil from 1979 to 2025 were fatal and 14% serious, against 1.6% and 18% across Great Britain.

Collisions by worst injury

  • Fatal1201.8%
  • Serious92614%
  • Slight5,73785%

People hurt, by injury

  • Fatal1261.3%
  • Serious1,13212%
  • Slight8,44687%

Merthyr Tydfil road accidents by year

Collisions and casualties in Merthyr Tydfil, 1979 to 2025

Collisions peaked at 225 in 1982. In 2025 there were 46, up 21% on 2024.

  • Collisions
  • Collisions in 2025: 46
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254658
20243854
20234663
20224354
20214569
20204859
201972119
201891130
201796143
201686129
201599148
2014115168
201393145
201297147
2011112179
2010115185
2009104151
2008130202
2007135221
2006149230
2005147229
2004157246
2003205314
2002178264
2001175270
2000170281
1999194261
1998160252
1997164249
1996211285
1995187242
1994205298
1993152221
1992192280
1991174239
1990203277
1989224262
1988204292
1987169219
1986173207
1985151188
1984179225
1983189254
1982225280
1981215339
1980209279
1979211297

When and where crashes happen in Merthyr Tydfil

Collisions by day of the week

  • Monday889 (13%)
  • Tuesday893 (13%)
  • Wednesday926 (14%)
  • Thursday951 (14%)
  • Friday1,169 (17%)
  • Saturday1,110 (16%)
  • Sunday845 (12%)

Collisions by time of day

  • 00:00 to 02:59379 (5.6%)
  • 03:00 to 05:59114 (1.7%)
  • 06:00 to 08:59572 (8.4%)
  • 09:00 to 11:59907 (13%)
  • 12:00 to 14:591,205 (18%)
  • 15:00 to 17:591,669 (25%)
  • 18:00 to 20:591,210 (18%)
  • 21:00 to 23:59727 (11%)

Collisions by month

  • January557 (8.2%)
  • February492 (7.3%)
  • March514 (7.6%)
  • April525 (7.7%)
  • May612 (9%)
  • June577 (8.5%)
  • July606 (8.9%)
  • August534 (7.9%)
  • September551 (8.1%)
  • October596 (8.8%)
  • November622 (9.2%)
  • December597 (8.8%)

Light conditions

  • Daylight4,673 (69%)
  • Dark, street lights lit1,403 (21%)
  • Dark, no street lighting401 (5.9%)
  • Dark, street lights unlit153 (2.3%)
  • Dark, lighting unknown126 (1.9%)
  • Not recorded27 (0.4%)

Weather at the time

  • Fine, no high winds5,066 (75%)
  • Raining, no high winds1,069 (16%)
  • Raining with high winds205 (3%)
  • Fine with high winds108 (1.6%)
  • Snowing, no high winds63 (0.9%)
  • Fog or mist48 (0.7%)
  • Snowing with high winds25 (0.4%)
  • Other88 (1.3%)
  • Not recorded111 (1.6%)

Road surface

  • Dry4,280 (63%)
  • Wet or damp2,192 (32%)
  • Frost or ice202 (3%)
  • Snow59 (0.9%)
  • Flood over 3cm deep15 (0.2%)
  • Oil or diesel4 (0.1%)
  • Not recorded31 (0.5%)

Speed limit at the scene

  • 10 mph9 (0.1%)
  • 15 mph4 (0.1%)
  • 20 mph66 (1%)
  • 30 mph4,940 (73%)
  • 40 mph198 (2.9%)
  • 50 mph100 (1.5%)
  • 60 mph1,074 (16%)
  • 70 mph391 (5.8%)
  • Not recorded1 (under 0.1%)

Type of road

  • Single carriageway5,449 (80%)
  • Dual carriageway571 (8.4%)
  • Roundabout466 (6.9%)
  • One way street or slip road115 (1.7%)
  • Not recorded182 (2.7%)

Source: Department for Transport, STATS19 road safety data

Who is hurt in road crashes in Merthyr Tydfil

Casualties by road user

  • Car occupant5,860 (60%)
  • Pedestrian1,795 (18%)
  • Motorcyclist625 (6.4%)
  • Bus or coach occupant504 (5.2%)
  • Cyclist378 (3.9%)
  • Van occupant215 (2.2%)
  • Goods vehicle occupant (over 3.5 tonnes)98 (1%)
  • Minibus occupant91 (0.9%)
  • Other vehicle occupant81 (0.8%)
  • Taxi or private hire car occupant56 (0.6%)
  • Not recorded1 (under 0.1%)

Casualties by age

  • 0 to 5367 (3.8%)
  • 6 to 10627 (6.5%)
  • 11 to 15652 (6.7%)
  • 16 to 201,642 (17%)
  • 21 to 251,307 (13%)
  • 26 to 351,692 (17%)
  • 36 to 451,215 (13%)
  • 46 to 55877 (9%)
  • 56 to 65621 (6.4%)
  • 66 to 75419 (4.3%)
  • Over 75263 (2.7%)
  • Not recorded22 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider4,786 (49%)
  • Passenger3,123 (32%)
  • Pedestrian1,795 (18%)

Vehicles involved

  • Car8,627 (77%)
  • Motorcycle652 (5.8%)
  • Van or goods vehicle up to 3.5 tonnes463 (4.1%)
  • Bus or coach456 (4.1%)
  • Pedal cycle375 (3.3%)
  • Goods vehicle over 3.5 tonnes330 (2.9%)
  • Other vehicle151 (1.3%)
  • Taxi or private hire car85 (0.8%)
  • Minibus70 (0.6%)
  • Agricultural vehicle3 (under 0.1%)
  • Other3 (under 0.1%)
  • Not recorded17 (0.2%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes and hotspots in Merthyr Tydfil

Map of the 24 most recent crashes and the 10 busiest accident hotspots in Merthyr Tydfil

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

  • 24 crashes
  • Serious
  • Slight

Accident hotspots (10)

How Merthyr Tydfil ranks among 351 areas

Of the 351 areas in England, Scotland and Wales, Merthyr Tydfil had the 10th fewest road collisions from 1979 to 2025.

Collisions
10th
lowest of 351 areas
Casualties
11th
lowest of 351 areas
Fatal collisions
Joint 20th
lowest of 351 areas
Serious collisions
7th
lowest of 351 areas
Areas ranked by collisions, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
339thEast Renfrewshire7,61810,0971561,816
340thTorridge7,1699,8751301,441
341stBlaenau Gwent6,8709,3921041,359
342ndMerthyr Tydfil (this area)6,7839,704120926
343rdMelton6,7089,4212631,341
344thRutland5,4848,0292301,150
345thOadby and Wigston5,2486,48060719

Accident hotspots in Merthyr Tydfil

Town, Merthyr Tydfil, CF47 8AU area is the busiest accident hotspot in Merthyr Tydfil, with 387 collisions from 2001 to 2025, 5 of them fatal.

Roads in Merthyr Tydfil with the most crashes

The A470 had the most collisions in Merthyr Tydfil from 1979 to 2025: 1,114, including 20 fatal and 204 serious.

Roads ranked by collisions in Merthyr Tydfil, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA4701,1141,67320204
2ndA4655761,0723591
3rdA4102485701766
4thA40544747091161
5thA4060222331632
6thB4255122171115
7thB428592113118
8thB42548010608
9thA472589313
10thB4276172514
11thA40594701
12thB42753301
13thA40652201
14thA40491101
15thA4051100
16thA40501100
17thA40581101
18thA40641100
19thA40671100
20thA41041200

Towns in Merthyr Tydfil

Merthyr Tydfil itself had the most collisions of any town in the area from 1979 to 2025: 3,318.

Postcode districts in Merthyr Tydfil

CF48 had the most collisions of any postcode district in Merthyr Tydfil from 1979 to 2025: 3,343.

Latest crashes in Merthyr Tydfil

Of the latest 24 crashes in Merthyr Tydfil, none were fatal and 7 were serious. The most recent was on 20 December 2025.

Severity