GWR 811A33
View line GWR
Alerts for train 811A33
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
58%
14/24 runs under 3 min
RT coverage: 24 full · 0 partial · 0 no data
On-time · 90 days
53%
39/73 runs under 3 min
RT coverage: 73 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +2 min
P90
+15min
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
- Tue 25 Aug Max en route +72 min · last fix heading to 74233 +70 min
- Tue 27 Oct Max en route +39 min · last fix heading to Slough +39 min
- Sat 24 Oct Max en route +35 min · last fix heading to Slough +35 min
- Tue 22 Sept Max en route +27 min · last fix heading to 73251 +27 min
- Sat 15 Aug Max en route +25 min · last fix heading to 73251 +25 min
Distribution · 90 days
73 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 52% · 38
- 3–10 min 33% · 24
- 10–30 min 10% · 7
- 30+ min 4% · 3
On-time by weekday
- 67% M n=12
- 67% T n=12
- 62% W n=13
- 8% T n=13
- 54% F n=13
- 70% S n=10
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 31 Oct | Maidenhead 20:45 | +2 min | +5 min |
| Fri 30 Oct | Maidenhead 20:40 | −2 min | +2 min |
| Thu 29 Oct | Maidenhead 20:48 | +4 min | +4 min |
| Wed 28 Oct | Maidenhead 20:47 | +2 min | +2 min |
| Tue 27 Oct | Slough 21:23 | +39 min | +39 min |
| Mon 26 Oct | Slough 20:45 | +2 min | +3 min |
| Sat 24 Oct | Slough 21:18 | +35 min | +35 min |
| Fri 23 Oct | Slough 20:49 | +4 min | +4 min |
| Thu 22 Oct | Maidenhead 20:49 | +5 min | +5 min |
| Wed 21 Oct | Maidenhead 20:45 | +1 min | +2 min |
| Tue 20 Oct | Maidenhead 20:46 | +2 min | +3 min |
| Mon 19 Oct | Maidenhead 20:43 | −1 min | +3 min |
| Sat 17 Oct | Maidenhead 20:44 | 0 min | +2 min |
| Fri 16 Oct | Maidenhead 20:48 | +2 min | +4 min |
| Thu 15 Oct | Slough 20:54 | +8 min | +8 min |
| Wed 14 Oct | Maidenhead 20:50 | +4 min | +4 min |
| Tue 13 Oct | Slough 20:47 | +1 min | +5 min |
| Mon 12 Oct | Slough 20:47 | +3 min | +5 min |
| Sat 10 Oct | Slough 20:44 | +1 min | +1 min |
| Fri 9 Oct | Maidenhead 20:44 | +1 min | +4 min |
| Thu 8 Oct | Maidenhead 20:52 | +8 min | +8 min |
| Wed 7 Oct | Slough 20:45 | +1 min | +2 min |
| Tue 6 Oct | Maidenhead 20:45 | +1 min | +3 min |
| Mon 5 Oct | Maidenhead 20:47 | +3 min | +3 min |
| Sat 3 Oct | 73251 20:32 | 0 min | +1 min |
| Fri 2 Oct | 73251 20:52 | +8 min | +12 min |
| Thu 1 Oct | 73251 20:53 | +9 min | +13 min |
| Wed 30 Sept | 73251 20:46 | +2 min | +4 min |
| Tue 29 Sept | 73251 20:44 | 0 min | +1 min |
| Mon 28 Sept | 73251 20:44 | 0 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.