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
40%
10/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
49%
36/74 runs under 3 min
RT coverage: 74 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +4 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 +64 min · last fix heading to 73251 +61 min
- Wed 30 Sept Max en route +56 min · last fix heading to 73799 +56 min
- Mon 3 Aug Max en route +28 min · last fix heading to 73251 +28 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
74 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 47% · 35
- 3–10 min 35% · 26
- 10–30 min 14% · 10
- 30+ min 3% · 2
On-time by weekday
- 45% M n=11
- 62% T n=13
- 58% W n=12
- 77% T n=13
- 38% F n=13
- 8% S n=12
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| 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 |
| Tue 29 Sept | 73251 12:21 | +4 min | +8 min |
| Mon 28 Sept | 73251 12:23 | +5 min | +7 min |
| Sat 26 Sept | 73251 12:22 | +9 min | +10 min |
| Fri 25 Sept | 73251 12:22 | +5 min | +7 min |
| Thu 24 Sept | 73251 12:19 | +2 min | +8 min |
| Wed 23 Sept | 73251 13:18 | +61 min | +64 min |
| Tue 22 Sept | 73251 12:19 | +2 min | +2 min |
| Mon 21 Sept | 73251 12:19 | +2 min | +2 min |
| Sat 19 Sept | 73251 12:16 | +2 min | +5 min |
| Fri 18 Sept | 73251 12:21 | +5 min | +5 min |
| Thu 17 Sept | 73251 12:20 | +3 min | +4 min |
| Wed 16 Sept | 73251 12:16 | 0 min | +6 min |
| Tue 15 Sept | 73251 12:15 | −2 min | +1 min |
| Sat 12 Sept | 73251 12:44 | +12 min | +12 min |
| Fri 11 Sept | 73251 12:21 | +3 min | +4 min |
| Thu 10 Sept | 73251 12:18 | +1 min | +3 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.