Merthyr Tydfil road traffic accidents
Merthyr Tydfil recorded 1,454 collisions in the STATS19 data between 1999 and 2025, involving 2,083 casualties. Of these collisions, 17 were fatal and 128 were serious. Recorded collisions in 2025 were up 5% on 2024.
Severity Breakdown
- Fatal
- 17
- Serious
- 128
- Casualties
- 2,083
- Fatal
- 17
- Serious
- 128
- Casualties
- 2,083
Collisions by Year
Areas covering Merthyr Tydfil
Roads in Merthyr Tydfil
Postcode districts in Merthyr Tydfil
Planning applications nearby
Data from PlanIndex, an index of UK planning registers.
Data from PlanIndex, an index of UK planning registers.
Accidents in Merthyr Tydfil
Road collision statistics for Merthyr Tydfil
Collisions recorded
1,454
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
2,083
Casualties recorded across every collision in this area.
Fatal collisions
17
Collisions in which at least one person died.
Serious collisions
128
10% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in Merthyr Tydfil
Collisions in Merthyr Tydfil are most frequently recorded on a Friday (17.4% of the total), with 30.2% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
81.4% of recorded collisions in Merthyr Tydfil happen on a single carriageway. Around 24.6% were recorded in adverse weather such as rain, snow or fog.
The collisions in Merthyr Tydfil have produced 2,083 casualties. Pedestrians account for 20.7% of those casualties, a marker of the risk to people on foot here.
Collisions by day of the week
Collisions by day of the week: Sunday 176 collisions, Monday 207 collisions, Tuesday 189 collisions, Wednesday 207 collisions, Thursday 197 collisions, Friday 253 collisions, Saturday 225 collisions.
Light conditions
Light conditions: Daylight 1,015 collisions, Darkness 439 collisions.
Road type
Road type: Single carriageway 1,184 collisions, Roundabout 94 collisions, Dual carriageway 86 collisions, Unknown 40 collisions, One way street/Slip road 22 collisions, One way street 20 collisions, Slip road 8 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 50 collisions, 30 mph 1,276 collisions, 40 mph 15 collisions, 50 mph 4 collisions, 60 mph 70 collisions, 70 mph 39 collisions.
Weather at the time
Weather at the time: Fine no high winds 1,097 collisions, Raining no high winds 239 collisions, Unknown 36 collisions, Raining + high winds 30 collisions, Other 28 collisions.
Who was hurt
Who was hurt: Driver or rider 1,046 casualties, Passenger 606 casualties, Pedestrian 431 casualties.
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Recent Accidents
Showing 20 of 1,454 accidents
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SeriousAccident 2025622500780
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SeriousAccident 2025622500515
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SeriousAccident 2025622500128
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SlightAccident 2025622500058
SlightFrequently asked questions about road accidents in Merthyr Tydfil
How many road accidents have there been in Merthyr Tydfil?
1,454 collisions have been recorded in Merthyr Tydfil in the STATS19 road safety data between 1999 and 2025, involving 2,083 casualties.
How many of the collisions in Merthyr Tydfil were serious or fatal?
17 were fatal and 128 were serious — 10% of all recorded collisions in Merthyr Tydfil resulted in a death or serious injury.
When do most road accidents happen in Merthyr Tydfil?
Friday is the most common day for collisions in Merthyr Tydfil, accounting for 17.4% of them, and 30.2% of all collisions here happen in darkness.
What kind of roads do collisions in Merthyr Tydfil happen on?
81.4% of collisions in Merthyr Tydfil are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in Merthyr Tydfil?
Pedestrians make up 20.7% of the 2,083 casualties recorded in Merthyr Tydfil.
Is road safety in Merthyr Tydfil getting better or worse?
Recorded collisions in Merthyr Tydfil rose 5% in 2025 compared with 2024. Year-on-year figures move with both genuine risk and changes in reporting, so they are best read as a trend rather than a single verdict.
Where does the road accident data for Merthyr Tydfil come from?
It comes from STATS19, the official record of personal-injury road collisions reported to the police and published by the Department for Transport. The figures for Merthyr Tydfil cover 1999 to 2025.