GWR 811A16
View line GWR
Alerts for train 811A16
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
41%
9/22 runs under 3 min
RT coverage: 22 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: +4 min
P90
+18min
9 in 10 runs arrive with less than this
30 days: +20 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 +64 min · last fix heading to 73251 +61 min
- Wed 30 Sept Max en route +56 min · last fix heading to 73799 +56 min
- Sat 24 Oct Max en route +36 min · last fix heading to Slough +36 min
- Mon 7 Sept Max en route +26 min · last fix heading to 73251 +26 min
- Wed 19 Aug Max en route +26 min · last fix heading to 73251 +26 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 35% · 25
- 10–30 min 14% · 10
- 30+ min 4% · 3
On-time by weekday
- 50% M n=10
- 58% T n=12
- 55% W n=11
- 69% T n=13
- 46% F n=13
- 8% S n=13
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 7 Nov | Maidenhead 12:09 | +5 min | +7 min |
| Fri 6 Nov | Slough 12:09 | +1 min | +1 min |
| Thu 5 Nov | Maidenhead 12:09 | 0 min | +1 min |
| Wed 4 Nov | Maidenhead 12:14 | +3 min | +3 min |
| Tue 3 Nov | Maidenhead 12:14 | +5 min | +5 min |
| Mon 2 Nov | Maidenhead 12:09 | +1 min | +2 min |
| Sat 31 Oct | Slough 12:19 | +7 min | +7 min |
| Fri 30 Oct | Maidenhead 12:21 | +4 min | +8 min |
| Thu 29 Oct | Slough 12:16 | −1 min | +2 min |
| Sat 24 Oct | Slough 12:49 | +36 min | +36 min |
| Fri 23 Oct | Maidenhead 12:16 | −1 min | +2 min |
| Thu 22 Oct | Maidenhead 12:32 | +15 min | +17 min |
| Wed 21 Oct | Slough 12:19 | +2 min | +3 min |
| Tue 20 Oct | Maidenhead 12:16 | −1 min | +1 min |
| Mon 19 Oct | Slough 12:21 | +4 min | +4 min |
| Sat 17 Oct | Slough 12:33 | +20 min | +20 min |
| Fri 16 Oct | Slough 12:30 | +11 min | +17 min |
| Thu 15 Oct | Maidenhead 12:25 | +7 min | +7 min |
| Wed 14 Oct | Slough 12:20 | +2 min | +2 min |
| Tue 13 Oct | Slough 12:17 | −1 min | +1 min |
| Mon 12 Oct | Maidenhead 12:36 | +18 min | +18 min |
| Sat 10 Oct | Slough 12:36 | +23 min | +26 min |
| Fri 9 Oct | Slough 12:21 | +4 min | +4 min |
| Thu 8 Oct | Slough 12:17 | 0 min | +6 min |
| Tue 6 Oct | Maidenhead 12:16 | −1 min | +2 min |
| Mon 5 Oct | Slough 12:16 | −1 min | +2 min |
| Sat 3 Oct | 73251 12:16 | +3 min | +5 min |
| Fri 2 Oct | 73251 12:18 | +1 min | +3 min |
| Thu 1 Oct | 73251 12:29 | +12 min | +12 min |
| Wed 30 Sept | 73799 13:27 | +56 min | +56 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.