GWR 811A22
View line GWR
Alerts for train 811A22
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line GWR.
The mini-map returns when the train runs
On-time · 30 days
37%
10/27 runs under 3 min
RT coverage: 27 full · 0 partial · 0 no data
On-time · 90 days
47%
39/83 runs under 3 min
RT coverage: 83 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +3 min
P90
+15min
9 in 10 runs arrive with less than this
30 days: +21 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
- Wed 23 Sept Max en route +60 min · last fix heading to 73251 +60 min
- Sun 8 Nov Max en route +48 min · last fix heading to Maidenhead +48 min
- Sat 24 Oct Max en route +41 min · last fix heading to Slough +41 min
- Sat 31 Oct Max en route +22 min · last fix heading to Maidenhead +21 min
- Mon 12 Oct Max en route +23 min · last fix heading to Slough +21 min
Distribution · 90 days
83 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 47% · 39
- 3–10 min 33% · 27
- 10–30 min 17% · 14
- 30+ min 4% · 3
On-time by weekday
- 56% M n=9
- 58% T n=12
- 67% W n=12
- 38% T n=13
- 31% F n=13
- 46% S n=13
- 36% S n=11
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 8 Nov | Maidenhead 17:23 | +48 min | +48 min |
| Sat 7 Nov | Slough 15:04 | −1 min | +3 min |
| Fri 6 Nov | Maidenhead 15:13 | +6 min | +8 min |
| Thu 5 Nov | Slough 15:09 | +3 min | +5 min |
| Wed 4 Nov | Maidenhead 15:08 | +1 min | +1 min |
| Tue 3 Nov | Maidenhead 15:07 | 0 min | +1 min |
| Mon 2 Nov | Maidenhead 15:07 | +1 min | +1 min |
| Sun 1 Nov | Slough 16:59 | +11 min | +11 min |
| Sat 31 Oct | Maidenhead 15:34 | +21 min | +22 min |
| Fri 30 Oct | Maidenhead 15:29 | +14 min | +14 min |
| Thu 29 Oct | Slough 15:23 | +8 min | +8 min |
| Sun 25 Oct | Maidenhead 17:01 | +14 min | +14 min |
| Sat 24 Oct | Slough 15:54 | +41 min | +41 min |
| Fri 23 Oct | Slough 15:34 | +19 min | +20 min |
| Thu 22 Oct | Slough 15:17 | +1 min | +3 min |
| Wed 21 Oct | Maidenhead 15:19 | +4 min | +4 min |
| Tue 20 Oct | Maidenhead 15:19 | +4 min | +5 min |
| Mon 19 Oct | Slough 15:18 | +3 min | +8 min |
| Sun 18 Oct | Slough 16:48 | −1 min | +7 min |
| Sat 17 Oct | Slough 15:12 | −1 min | +3 min |
| Fri 16 Oct | Maidenhead 15:15 | 0 min | +2 min |
| Thu 15 Oct | Slough 15:18 | +3 min | +3 min |
| Wed 14 Oct | Maidenhead 15:16 | +1 min | +3 min |
| Tue 13 Oct | Maidenhead 15:16 | +1 min | +5 min |
| Mon 12 Oct | Slough 15:36 | +21 min | +23 min |
| Sun 11 Oct | Maidenhead 16:49 | +4 min | +8 min |
| Sat 10 Oct | Slough 15:18 | +3 min | +5 min |
| Fri 9 Oct | Maidenhead 15:23 | +8 min | +8 min |
| Thu 8 Oct | Slough 15:17 | +2 min | +4 min |
| Wed 7 Oct | Maidenhead 15:16 | 0 min | +2 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.