South Western Railway 871A31
View line South Western Railway
Alerts for train 871A31
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line South Western Railway.
The mini-map returns when the train runs
On-time · 30 days
77%
20/26 runs under 3 min
RT coverage: 26 full · 0 partial · 0 no data
On-time · 90 days
63%
54/86 runs under 3 min
RT coverage: 86 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +1 min
P90
+8min
9 in 10 runs arrive with less than this
30 days: +7 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
- Sun 9 Aug Max en route +36 min · last fix heading to 87230 +35 min
- Tue 21 Jul Max en route +38 min · last fix heading to Alton +33 min
- Fri 28 Aug Max en route +21 min · last fix heading to Alton +21 min
- Mon 7 Sept Max en route +20 min · last fix heading to Alton +20 min
- Sun 6 Sept Max en route +15 min · last fix heading to 87230 +13 min
Distribution · 90 days
86 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 63% · 54
- 3–10 min 30% · 26
- 10–30 min 5% · 4
- 30+ min 2% · 2
On-time by weekday
- 67% M n=12
- 69% T n=13
- 85% W n=13
- 62% T n=13
- 46% F n=13
- 90% S n=10
- 25% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 9 Oct | Alton 13:18 | 0 min | +1 min |
| Thu 8 Oct | Alton 13:21 | +3 min | +7 min |
| Wed 7 Oct | Farnham 12:56 | −1 min | +2 min |
| Tue 6 Oct | Alton 13:17 | −1 min | — |
| Mon 5 Oct | Alton 13:18 | 0 min | +1 min |
| Sun 4 Oct | 87230 14:39 | +7 min | +7 min |
| Fri 2 Oct | Alton 13:19 | 0 min | +3 min |
| Thu 1 Oct | Alton 13:19 | +1 min | +4 min |
| Wed 30 Sept | Alton 13:18 | −1 min | +2 min |
| Tue 29 Sept | 87043 13:10 | +7 min | +7 min |
| Mon 28 Sept | Alton 13:20 | +2 min | +5 min |
| Sun 27 Sept | 87230 16:56 | +8 min | +8 min |
| Sat 26 Sept | Alton 13:22 | +1 min | +4 min |
| Fri 25 Sept | Alton 13:18 | 0 min | +1 min |
| Thu 24 Sept | Alton 13:26 | +8 min | +8 min |
| Wed 23 Sept | Alton 13:19 | +1 min | +1 min |
| Tue 22 Sept | Alton 13:18 | 0 min | +3 min |
| Mon 21 Sept | Alton 13:18 | 0 min | +1 min |
| Sun 20 Sept | 87230 14:26 | +2 min | +3 min |
| Fri 18 Sept | Alton 13:19 | +2 min | +4 min |
| Thu 17 Sept | Alton 13:19 | +1 min | +1 min |
| Wed 16 Sept | Alton 13:18 | +1 min | +1 min |
| Tue 15 Sept | Alton 13:19 | +2 min | +2 min |
| Mon 14 Sept | Alton 13:19 | +2 min | +2 min |
| Sun 13 Sept | 87230 14:34 | +7 min | +8 min |
| Sat 12 Sept | Alton 13:19 | +1 min | +4 min |
| Fri 11 Sept | Alton 13:20 | +2 min | +2 min |
| Thu 10 Sept | Alton 13:19 | +1 min | +1 min |
| Wed 9 Sept | Alton 13:19 | +2 min | +2 min |
| Tue 8 Sept | Alton 13:20 | +3 min | +3 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.