GWR 811A28
View line GWR
Alerts for train 811A28
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
53%
16/30 runs under 3 min
RT coverage: 30 full · 0 partial · 0 no data
On-time · 90 days
39%
34/88 runs under 3 min
RT coverage: 88 full · 0 partial · 0 no data
Typical delay
+4min
Median at arrival, 90 days
30 days: +2 min
P90
+25min
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
- Sat 5 Sept Max en route +75 min · last fix heading to 74233 +75 min
- Sun 20 Sept Max en route +60 min · last fix heading to 73251 +58 min
- Fri 18 Sept Max en route +37 min · last fix heading to 73251 +37 min
- Thu 13 Aug Max en route +35 min · last fix heading to 73251 +35 min
- Sun 16 Aug Max en route +35 min · last fix heading to 73251 +31 min
Distribution · 90 days
88 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 2% · 2
- On time 36% · 32
- 3–10 min 35% · 31
- 10–30 min 18% · 16
- 30+ min 8% · 7
On-time by weekday
- 58% M n=12
- 54% T n=13
- 46% W n=13
- 38% T n=13
- 25% F n=12
- 31% S n=13
- 17% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 18 Oct | Slough 20:04 | +14 min | +15 min |
| Sat 17 Oct | Slough 18:14 | +1 min | +1 min |
| Fri 16 Oct | Slough 18:12 | −1 min | +1 min |
| Thu 15 Oct | Maidenhead 18:15 | +2 min | +2 min |
| Wed 14 Oct | Slough 18:33 | +20 min | +20 min |
| Tue 13 Oct | Slough 18:12 | −1 min | +1 min |
| Mon 12 Oct | Slough 18:16 | +3 min | +3 min |
| Sun 11 Oct | Maidenhead 19:47 | +3 min | +4 min |
| Sat 10 Oct | Maidenhead 18:18 | +6 min | +6 min |
| Fri 9 Oct | Maidenhead 18:16 | +3 min | +6 min |
| Thu 8 Oct | Slough 18:14 | +1 min | +2 min |
| Wed 7 Oct | Slough 18:12 | −1 min | +2 min |
| Tue 6 Oct | Slough 18:12 | −1 min | +4 min |
| Mon 5 Oct | Slough 18:03 | −2 min | +2 min |
| Sun 4 Oct | 73251 20:16 | +24 min | +24 min |
| Sat 3 Oct | 73251 18:18 | +5 min | +8 min |
| Fri 2 Oct | 73251 18:14 | +1 min | +5 min |
| Thu 1 Oct | 73251 18:17 | +4 min | +4 min |
| Wed 30 Sept | 73251 18:12 | −1 min | +17 min |
| Tue 29 Sept | 73251 18:12 | −1 min | +1 min |
| Mon 28 Sept | 73251 18:14 | +1 min | +1 min |
| Sun 27 Sept | 73251 19:58 | +9 min | +9 min |
| Sat 26 Sept | 73251 18:14 | +1 min | +4 min |
| Fri 25 Sept | 73251 18:18 | +5 min | +5 min |
| Thu 24 Sept | 73251 18:17 | +4 min | +6 min |
| Wed 23 Sept | 73251 18:39 | +26 min | +27 min |
| Tue 22 Sept | 73251 18:12 | −1 min | +1 min |
| Mon 21 Sept | 73251 18:13 | −1 min | +1 min |
| Sun 20 Sept | 73251 20:50 | +58 min | +60 min |
| Sat 19 Sept | 73251 18:14 | +1 min | +4 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.