GWR 811A35
View line GWR
Alerts for train 811A35
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
26%
6/23 runs under 3 min
RT coverage: 23 full · 0 partial · 0 no data
On-time · 90 days
30%
22/73 runs under 3 min
RT coverage: 73 full · 0 partial · 0 no data
Typical delay
+4min
Median at arrival, 90 days
30 days: +3 min
P90
+19min
9 in 10 runs arrive with less than this
30 days: +16 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 +91 min · last fix heading to 73251 +90 min
- Fri 11 Sept Max en route +38 min · last fix heading to 73251 +38 min
- Fri 28 Aug Max en route +36 min · last fix heading to 73251 +36 min
- Fri 14 Aug Max en route +35 min · last fix heading to 73251 +35 min
- Tue 18 Aug Max en route +32 min · last fix heading to 73251 +32 min
Distribution · 90 days
73 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 30% · 22
- 3–10 min 44% · 32
- 10–30 min 19% · 14
- 30+ min 7% · 5
On-time by weekday
- 8% M n=12
- 17% T n=12
- 54% W n=13
- 46% T n=13
- 18% F n=11
- 33% S n=12
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 10 Oct | Slough 21:46 | +3 min | +3 min |
| Fri 9 Oct | Slough 21:46 | +3 min | +3 min |
| Thu 8 Oct | Slough 21:54 | +10 min | +10 min |
| Wed 7 Oct | Maidenhead 21:45 | +2 min | +4 min |
| Tue 6 Oct | Slough 21:44 | +1 min | +2 min |
| Mon 5 Oct | Slough 21:52 | +9 min | +9 min |
| Sat 3 Oct | 73251 21:51 | +17 min | +17 min |
| Fri 2 Oct | 73251 21:45 | +2 min | +2 min |
| Thu 1 Oct | 73251 21:47 | +3 min | +4 min |
| Wed 30 Sept | 73251 21:48 | +5 min | +5 min |
| Tue 29 Sept | 73251 21:47 | +4 min | +5 min |
| Mon 28 Sept | 73251 21:50 | +7 min | +7 min |
| Sat 26 Sept | 73251 21:46 | +3 min | +3 min |
| Thu 24 Sept | 73251 21:47 | +3 min | +3 min |
| Wed 23 Sept | 74331 21:23 | +18 min | +18 min |
| Tue 22 Sept | 73251 22:02 | +19 min | +21 min |
| Mon 21 Sept | 73251 21:46 | +3 min | +3 min |
| Sat 19 Sept | 73251 21:54 | +11 min | +13 min |
| Fri 18 Sept | 73251 21:47 | +4 min | +6 min |
| Thu 17 Sept | 73251 21:44 | +1 min | +2 min |
| Wed 16 Sept | 73251 21:44 | +1 min | +1 min |
| Tue 15 Sept | 73251 21:45 | +2 min | +5 min |
| Mon 14 Sept | 73251 21:48 | +5 min | +9 min |
| Fri 11 Sept | 73251 22:21 | +38 min | +38 min |
| Thu 10 Sept | 73251 21:48 | +5 min | +5 min |
| Wed 9 Sept | 73251 21:52 | +9 min | +12 min |
| Tue 8 Sept | 73251 21:47 | +3 min | +3 min |
| Mon 7 Sept | 73251 21:49 | +6 min | +6 min |
| Sat 5 Sept | 73251 23:21 | +90 min | +91 min |
| Fri 4 Sept | 73251 21:49 | +6 min | +6 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.