GWR 811A29
View line GWR
Alerts for train 811A29
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
52%
13/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
47%
34/72 runs under 3 min
RT coverage: 72 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +2 min
P90
+10min
9 in 10 runs arrive with less than this
30 days: +8 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
- Sat 24 Oct Max en route +24 min · last fix heading to Slough +24 min
- Fri 25 Sept Max en route +24 min · last fix heading to 73251 +24 min
- Fri 21 Aug Max en route +17 min · last fix heading to 73251 +17 min
- Thu 13 Aug Max en route +16 min · last fix heading to 73251 +16 min
- Mon 17 Aug Max en route +15 min · last fix heading to 73251 +15 min
Distribution · 90 days
72 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 46% · 33
- 3–10 min 40% · 29
- 10–30 min 13% · 9
- 30+ min 0% · 0
On-time by weekday
- 58% M n=12
- 50% T n=12
- 50% W n=12
- 31% T n=13
- 38% F n=13
- 60% S n=10
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Mon 2 Nov | Slough 18:44 | +4 min | +6 min |
| Sat 31 Oct | Maidenhead 18:49 | +6 min | +6 min |
| Fri 30 Oct | Maidenhead 18:47 | 0 min | +2 min |
| Thu 29 Oct | Maidenhead 18:52 | +5 min | +5 min |
| Wed 28 Oct | Slough 18:48 | +1 min | +2 min |
| Tue 27 Oct | Goring & Streatley 18:21 | +2 min | +4 min |
| Mon 26 Oct | Maidenhead 18:54 | +7 min | +7 min |
| Sat 24 Oct | Slough 19:07 | +24 min | +24 min |
| Fri 23 Oct | Maidenhead 18:52 | +5 min | +9 min |
| Thu 22 Oct | Maidenhead 18:57 | +10 min | +12 min |
| Wed 21 Oct | Maidenhead 18:48 | 0 min | +2 min |
| Tue 20 Oct | Maidenhead 18:52 | +5 min | +6 min |
| Mon 19 Oct | Slough 18:48 | +1 min | +3 min |
| Sat 17 Oct | Slough 18:43 | 0 min | +1 min |
| Fri 16 Oct | Maidenhead 18:57 | +9 min | +12 min |
| Thu 15 Oct | Slough 18:49 | +1 min | +2 min |
| Wed 14 Oct | Maidenhead 18:55 | +7 min | +7 min |
| Tue 13 Oct | Maidenhead 18:47 | −1 min | +1 min |
| Mon 12 Oct | Slough 18:47 | 0 min | +4 min |
| Sat 10 Oct | Slough 18:45 | +1 min | +1 min |
| Fri 9 Oct | Maidenhead 18:46 | −1 min | +1 min |
| Thu 8 Oct | Slough 18:52 | +5 min | +9 min |
| Wed 7 Oct | Maidenhead 18:50 | +3 min | +3 min |
| Tue 6 Oct | Maidenhead 18:48 | +1 min | +2 min |
| Mon 5 Oct | Maidenhead 18:38 | 0 min | +2 min |
| Sat 3 Oct | 73251 18:48 | +4 min | +4 min |
| Fri 2 Oct | 73251 18:48 | +1 min | +2 min |
| Thu 1 Oct | 73251 18:48 | +1 min | +3 min |
| Wed 30 Sept | 73251 18:47 | 0 min | +5 min |
| Tue 29 Sept | 73251 18:48 | +1 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.