Transport for Wales 781M54

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Mon, Tue, Wed, Thu, Fri, Sat Transport for Wales

Running now · updated 20:00

Running now +1 min

Today it is running worse than usual: typical arrival delay is −1 min; 96% of the last 26 runs arrived on time.

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On-time · 30 days

96%

25/26 runs under 3 min

RT coverage: 26 full · 0 partial · 0 no data

On-time · 90 days

89%

67/75 runs under 3 min

RT coverage: 75 full · 0 partial · 0 no data

Typical delay

−1min

Median at arrival, 90 days

30 days: −1 min

P90

+3min

9 in 10 runs arrive with less than this

30 days: +2 min

Last 30 days

Delay at the end of each run, in minutes. One bar per run.

On time (<3 min)
3–10 min
10–30 min
30+ min
Partial coverage
No data

Worst days

Tue 28 Jul Max en route +21 min · last fix heading to Merthyr Tydfil +18 min
Thu 17 Sept Max en route +5 min · last fix heading to Merthyr Vale +5 min
Thu 6 Aug Max en route +6 min · last fix heading to Merthyr Tydfil +5 min
Wed 5 Aug Max en route +14 min · last fix heading to Merthyr Tydfil +5 min
Fri 24 Jul Max en route +5 min · last fix heading to Pontypridd +5 min

Distribution · 90 days

75 runs with a known final delay. On time = under 3 min, the same cut the map uses.

Early 36% · 27
On time 53% · 40
3–10 min 9% · 7
10–30 min 1% · 1
30+ min 0% · 0

On-time by weekday

100% M n=12
92% T n=13
85% W n=13
85% T n=13
85% F n=13
91% S n=11
— S n=0

Recent runs

Date	Last stop	Final	Max
Fri 16 Oct	Merthyr Tydfil 19:59	+1 min	+3 min
Thu 15 Oct	Merthyr Tydfil 20:10	−1 min	+3 min
Wed 14 Oct	Pentre-Bach 20:12	+1 min	+3 min
Tue 13 Oct	Pentre-Bach 20:13	+1 min	+4 min
Mon 12 Oct	Pentre-Bach 20:11	−1 min	+3 min
Sat 10 Oct	Merthyr Tydfil 20:11	−1 min	+2 min
Fri 9 Oct	Merthyr Tydfil 20:10	−1 min	+2 min
Thu 8 Oct	Pentre-Bach 20:13	+1 min	+2 min
Wed 7 Oct	Merthyr Tydfil 20:10	−1 min	+1 min
Tue 6 Oct	Merthyr Tydfil 20:10	−1 min	+2 min
Mon 5 Oct	Pentre-Bach 20:14	+2 min	+7 min
Sat 3 Oct	Merthyr Tydfil 20:10	−2 min	+2 min
Fri 2 Oct	Merthyr Tydfil 20:12	0 min	+2 min
Thu 1 Oct	Merthyr Tydfil 20:13	+1 min	+4 min
Wed 30 Sept	Merthyr Tydfil 20:11	−1 min	+4 min
Tue 29 Sept	Merthyr Tydfil 20:12	0 min	+2 min
Mon 28 Sept	Merthyr Tydfil 20:12	0 min	+2 min
Sat 26 Sept	Merthyr Tydfil 20:10	−2 min	+2 min
Fri 25 Sept	Merthyr Tydfil 20:14	+2 min	+3 min
Thu 24 Sept	Merthyr Tydfil 20:10	−2 min	+1 min
Wed 23 Sept	Merthyr Tydfil 20:09	−3 min	+1 min
Tue 22 Sept	Merthyr Tydfil 20:11	−1 min	+2 min
Mon 21 Sept	Merthyr Tydfil 20:10	−2 min	+1 min
Sat 19 Sept	Merthyr Tydfil 20:12	+1 min	+5 min
Fri 18 Sept	Merthyr Tydfil 20:11	−1 min	+2 min
Thu 17 Sept	Merthyr Vale 00:26	+5 min	+5 min
Wed 16 Sept	Merthyr Tydfil 20:10	−2 min	+5 min
Tue 15 Sept	Merthyr Tydfil 20:10	−2 min	+4 min
Mon 14 Sept	Merthyr Tydfil 20:09	−3 min	+5 min
Sat 12 Sept	Merthyr Tydfil 20:10	−2 min	+1 min

Each run is closed into train_runs (country, train number, service day) from the live positions. Final delay = last delay seen. Partial coverage: the feed stopped before the final stop (last value used, hatched in the chart). No data: a run without any valid delay; counts as neither on time nor late. Data collected since 11 July 2026.