GWR 831A85
View line GWR
Alerts for train 831A85
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
38%
9/24 runs under 3 min
RT coverage: 24 full · 0 partial · 0 no data
On-time · 90 days
27%
19/70 runs under 3 min
RT coverage: 70 full · 0 partial · 0 no data
Typical delay
+7min
Median at arrival, 90 days
30 days: +7 min
P90
+16min
9 in 10 runs arrive with less than this
30 days: +17 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 14 Oct Max en route +45 min · last fix heading to Slough +45 min
- Sat 15 Aug Max en route +25 min · last fix heading to 73251 +22 min
- Fri 31 Jul Max en route +24 min · last fix heading to 73251 +22 min
- Fri 21 Aug Max en route +22 min · last fix heading to 73251 +21 min
- Sat 19 Sept Max en route +19 min · last fix heading to 73251 +19 min
Distribution · 90 days
70 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 3% · 2
- On time 24% · 17
- 3–10 min 34% · 24
- 10–30 min 37% · 26
- 30+ min 1% · 1
On-time by weekday
- 18% M n=11
- 50% T n=12
- 17% W n=12
- 31% T n=13
- 17% F n=12
- 30% S n=10
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 15 Oct | Slough 16:44 | +1 min | +2 min |
| Wed 14 Oct | Slough 17:28 | +45 min | +45 min |
| Tue 13 Oct | Slough 16:52 | +9 min | +9 min |
| Mon 12 Oct | Slough 17:01 | +17 min | +17 min |
| Fri 9 Oct | Slough 16:25 | +1 min | +6 min |
| Thu 8 Oct | Maidenhead 16:26 | +2 min | +6 min |
| Wed 7 Oct | Slough 16:30 | +6 min | +6 min |
| Tue 6 Oct | Maidenhead 16:22 | −3 min | +1 min |
| Mon 5 Oct | Slough 16:22 | +5 min | +5 min |
| Sat 3 Oct | 73251 16:22 | +2 min | +3 min |
| Fri 2 Oct | 73251 16:36 | +12 min | +12 min |
| Thu 1 Oct | 73251 16:31 | +7 min | +7 min |
| Wed 30 Sept | 73251 16:33 | +9 min | +11 min |
| Tue 29 Sept | 73251 16:21 | −3 min | +2 min |
| Sat 26 Sept | 73251 16:31 | +11 min | +15 min |
| Fri 25 Sept | 73251 16:40 | +16 min | +16 min |
| Thu 24 Sept | 73251 16:38 | +14 min | +14 min |
| Wed 23 Sept | 73251 16:25 | +1 min | +3 min |
| Tue 22 Sept | 73251 16:25 | +1 min | +2 min |
| Mon 21 Sept | 73251 16:26 | +2 min | +3 min |
| Sat 19 Sept | 73251 16:39 | +19 min | +19 min |
| Fri 18 Sept | 73251 16:31 | +7 min | +7 min |
| Thu 17 Sept | 73251 16:34 | +10 min | +10 min |
| Wed 16 Sept | 73251 16:36 | +12 min | +13 min |
| Tue 15 Sept | 73251 16:33 | +9 min | +9 min |
| Fri 11 Sept | 73251 16:26 | +2 min | +4 min |
| Thu 10 Sept | 73251 16:27 | +3 min | +6 min |
| Wed 9 Sept | 73251 16:31 | +7 min | +12 min |
| Tue 8 Sept | 73251 16:38 | +14 min | +19 min |
| Mon 7 Sept | 73251 16:29 | +5 min | +7 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.