GWR 851A90
View line GWR
Alerts for train 851A90
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
25%
1/4 runs under 3 min
RT coverage: 4 full · 0 partial · 0 no data
On-time · 90 days
26%
6/23 runs under 3 min
RT coverage: 23 full · 0 partial · 0 no data
Typical delay
+10min
Median at arrival, 90 days
P90
+49min
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 +70 min · last fix heading to 73251 +63 min
- Sat 15 Aug Max en route +61 min · last fix heading to 73251 +59 min
- Sat 5 Sept Max en route +50 min · last fix heading to 74233 +50 min
- Sun 26 Jul Max en route +48 min · last fix heading to 73251 +46 min
- Sun 4 Oct Max en route +38 min · last fix heading to 73251 +38 min
Distribution · 90 days
23 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 4% · 1
- On time 22% · 5
- 3–10 min 22% · 5
- 10–30 min 17% · 4
- 30+ min 35% · 8
On-time by weekday
- 100% M n=1
- — T n=0
- — W n=0
- — T n=0
- — F n=0
- 22% S n=9
- 23% S n=13
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 11 Oct | Slough 20:04 | 0 min | +6 min |
| Sun 4 Oct | 73251 20:10 | +38 min | +38 min |
| Sun 27 Sept | 73251 20:24 | +5 min | +5 min |
| Sun 20 Sept | 84135 16:21 | +3 min | +3 min |
| Sun 13 Sept | 73251 20:07 | +34 min | +34 min |
| Sat 12 Sept | 73251 18:40 | −2 min | +2 min |
| Sun 6 Sept | 73251 20:00 | +27 min | +27 min |
| Sat 5 Sept | 74233 18:57 | +50 min | +50 min |
| Sun 30 Aug | 73251 20:36 | +63 min | +70 min |
| Sat 29 Aug | 73251 18:34 | +1 min | +6 min |
| Sun 23 Aug | 73251 20:03 | +30 min | +31 min |
| Sat 22 Aug | 73251 19:08 | +35 min | +35 min |
| Sun 16 Aug | 73251 19:33 | 0 min | +3 min |
| Sat 15 Aug | 73251 19:32 | +59 min | +61 min |
| Sun 9 Aug | 73251 19:42 | +10 min | +11 min |
| Sat 8 Aug | 73251 18:39 | +4 min | +9 min |
| Sun 2 Aug | 73251 19:59 | +27 min | +28 min |
| Sat 1 Aug | 73251 19:01 | +25 min | +28 min |
| Sun 26 Jul | 73251 20:19 | +46 min | +48 min |
| Sat 25 Jul | 73251 18:41 | +6 min | +11 min |
| Mon 20 Jul | — 09:29 | 0 min | — |
| Sun 19 Jul | 73251 19:34 | +1 min | +6 min |
| Sat 18 Jul | 73799 19:05 | +9 min | +12 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.