Ystradgynlais road traffic accidents
Ystradgynlais recorded 143 collisions in the STATS19 data between 1999 and 2025, involving 177 casualties. Of these collisions, 3 were fatal and 25 were serious. Recorded collisions in 2025 were up 33% on 2024.
Severity Breakdown
- Fatal
- 3
- Serious
- 25
- Casualties
- 177
- Fatal
- 3
- Serious
- 25
- Casualties
- 177
Collisions by Year
Areas covering Ystradgynlais
Roads in Ystradgynlais
Postcode districts in Ystradgynlais
Planning applications nearby
Data from PlanIndex, an index of UK planning registers.
Data from PlanIndex, an index of UK planning registers.
Accidents in Ystradgynlais
Road collision statistics for Ystradgynlais
Collisions recorded
143
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
177
Casualties recorded across every collision in this area.
Fatal collisions
3
Collisions in which at least one person died.
Serious collisions
25
19.6% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in Ystradgynlais
Collisions in Ystradgynlais are most frequently recorded on a Friday (19.6% of the total), with 28.7% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
93.7% of recorded collisions in Ystradgynlais happen on a single carriageway. Around 32.2% were recorded in adverse weather such as rain, snow or fog.
The collisions in Ystradgynlais have produced 177 casualties. Pedestrians account for 19.8% 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 15 collisions, Monday 17 collisions, Tuesday 20 collisions, Wednesday 21 collisions, Thursday 16 collisions, Friday 28 collisions, Saturday 26 collisions.
Light conditions
Light conditions: Daylight 102 collisions, Darkness 41 collisions.
Road type
Road type: Single carriageway 134 collisions, Roundabout 6 collisions, Dual carriageway 2 collisions, One way street/Slip road 1 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 6 collisions, 30 mph 114 collisions, 40 mph 18 collisions, 50 mph 3 collisions, 60 mph 2 collisions.
Weather at the time
Weather at the time: Fine no high winds 97 collisions, Raining no high winds 32 collisions, Raining + high winds 6 collisions, Other 4 collisions, Snowing no high winds 1 collisions.
Who was hurt
Who was hurt: Driver or rider 102 casualties, Passenger 40 casualties, Pedestrian 35 casualties.
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Recent Accidents
Showing 3 of 143 accidents
Accident 199963ER02599
SlightAccident 199963ER01299
SlightAccident 199963ER00599
SeriousFrequently asked questions about road accidents in Ystradgynlais
How many road accidents have there been in Ystradgynlais?
143 collisions have been recorded in Ystradgynlais in the STATS19 road safety data between 1999 and 2025, involving 177 casualties.
How many of the collisions in Ystradgynlais were serious or fatal?
3 were fatal and 25 were serious — 19.6% of all recorded collisions in Ystradgynlais resulted in a death or serious injury.
When do most road accidents happen in Ystradgynlais?
Friday is the most common day for collisions in Ystradgynlais, accounting for 19.6% of them, and 28.7% of all collisions here happen in darkness.
What kind of roads do collisions in Ystradgynlais happen on?
93.7% of collisions in Ystradgynlais are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in Ystradgynlais?
Pedestrians make up 19.8% of the 177 casualties recorded in Ystradgynlais.
Is road safety in Ystradgynlais getting better or worse?
Recorded collisions in Ystradgynlais rose 33% 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 Ystradgynlais 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 Ystradgynlais cover 1999 to 2025.