GWR 831A88
View line GWR
Alerts for train 831A88
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
—
Too little data (2/2 runs with data)
RT coverage: 2 full · 0 partial · 0 no data
On-time · 90 days
25%
3/12 runs under 3 min
RT coverage: 12 full · 0 partial · 0 no data
Typical delay
+6min
Median at arrival, 90 days
P90
+15min
9 in 10 runs arrive with less than this
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
- Sun 30 Aug Max en route +20 min · last fix heading to 73799 +17 min
- Sun 2 Aug Max en route +20 min · last fix heading to 73251 +15 min
- Sun 23 Aug Max en route +18 min · last fix heading to 73251 +13 min
- Sun 9 Aug Max en route +17 min · last fix heading to 73251 +12 min
- Sun 18 Oct Max en route +16 min · last fix heading to Slough +11 min
Distribution · 90 days
12 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 25% · 3
- 3–10 min 33% · 4
- 10–30 min 42% · 5
- 30+ min 0% · 0
On-time by weekday
- 100% M n=1
- — T n=0
- — W n=0
- — T n=0
- — F n=0
- — S n=0
- 18% S n=11
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 18 Oct | Slough 18:29 | +11 min | +16 min |
| Sun 4 Oct | 73251 18:19 | +5 min | +11 min |
| Mon 21 Sept | — 10:02 | 0 min | — |
| Sun 20 Sept | 73251 18:24 | +2 min | +6 min |
| Sun 13 Sept | 73251 18:26 | +4 min | +12 min |
| Sun 6 Sept | 73251 18:28 | +7 min | +8 min |
| Sun 30 Aug | 73799 18:33 | +17 min | +20 min |
| Sun 23 Aug | 73251 18:28 | +13 min | +18 min |
| Sun 16 Aug | 73251 18:19 | +5 min | +12 min |
| Sun 9 Aug | 73251 18:27 | +12 min | +17 min |
| Sun 2 Aug | 73251 18:30 | +15 min | +20 min |
| Sun 26 Jul | 73251 18:17 | +2 min | +9 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.