Transport for Wales 421D15
View line Transport for Wales
Alerts for train 421D15
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Transport for Wales.
The mini-map returns when the train runs
On-time · 30 days
100%
5/5 runs under 3 min
RT coverage: 5 full · 0 partial · 0 no data
On-time · 90 days
75%
9/12 runs under 3 min
RT coverage: 12 full · 0 partial · 0 no data
Typical delay
−1min
Median at arrival, 90 days
30 days: −2 min
P90
+8min
9 in 10 runs arrive with less than this
30 days: −1 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
- Sun 26 Jul Max en route +27 min · last fix heading to Holyhead +16 min
- Sun 2 Aug Max en route +12 min · last fix heading to Holyhead +8 min
- Sun 16 Aug Max en route +13 min · last fix heading to Holyhead +4 min
Distribution · 90 days
12 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 42% · 5
- On time 33% · 4
- 3–10 min 17% · 2
- 10–30 min 8% · 1
- 30+ min 0% · 0
On-time by weekday
- — M n=0
- — T n=0
- — W n=0
- — T n=0
- — F n=0
- — S n=0
- 75% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 11 Oct | Holyhead 15:10 | −3 min | +1 min |
| Sun 4 Oct | Holyhead 15:09 | −3 min | +4 min |
| Sun 27 Sept | 40031 15:11 | −2 min | +2 min |
| Sun 20 Sept | Holyhead 15:12 | −1 min | +4 min |
| Sun 13 Sept | Holyhead 15:11 | −1 min | +6 min |
| Sun 6 Sept | 40031 15:10 | −3 min | +4 min |
| Sun 30 Aug | 40031 15:09 | −4 min | +5 min |
| Sun 16 Aug | Holyhead 15:17 | +4 min | +13 min |
| Sun 9 Aug | Holyhead 15:14 | +1 min | +11 min |
| Sun 2 Aug | Holyhead 15:29 | +8 min | +12 min |
| Sun 26 Jul | Holyhead 15:21 | +16 min | +27 min |
| Sun 19 Jul | 40031 15:12 | −1 min | +5 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.