South Western Railway 871W81
View line South Western Railway
Alerts for train 871W81
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
24%
6/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
36%
27/75 runs under 3 min
RT coverage: 75 full · 0 partial · 0 no data
Typical delay
+4min
Median at arrival, 90 days
30 days: +9 min
P90
+38min
9 in 10 runs arrive with less than this
30 days: +45 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
- Fri 9 Oct Max en route +119 min · last fix heading to Dorchester South +119 min
- Wed 12 Aug Max en route +72 min · last fix heading to Weymouth C.H.S. +72 min
- Mon 7 Sept Max en route +61 min · last fix heading to 86980 +61 min
- Thu 17 Sept Max en route +52 min · last fix heading to 86040 +52 min
- Sat 3 Oct Max en route +49 min · last fix heading to 86040 +49 min
Distribution · 90 days
75 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 36% · 27
- 3–10 min 25% · 19
- 10–30 min 24% · 18
- 30+ min 15% · 11
On-time by weekday
- 54% M n=13
- 38% T n=13
- 25% W n=12
- 50% T n=12
- 31% F n=13
- 17% S n=12
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 13 Oct | Dorchester South 22:33 | 0 min | +6 min |
| Mon 12 Oct | Dorchester South 22:44 | +10 min | +14 min |
| Sat 10 Oct | Dorchester South 22:37 | +4 min | +7 min |
| Fri 9 Oct | Dorchester South 00:48 | +119 min | +119 min |
| Thu 8 Oct | Dorchester South 22:33 | 0 min | +4 min |
| Wed 7 Oct | Dorchester South 22:42 | +9 min | +13 min |
| Tue 6 Oct | Dorchester South 22:36 | +3 min | +9 min |
| Mon 5 Oct | Dorchester South 22:34 | +2 min | +3 min |
| Sat 3 Oct | 86040 20:56 | +49 min | +49 min |
| Fri 2 Oct | 86980 22:48 | +15 min | +20 min |
| Thu 1 Oct | 86980 22:41 | +8 min | +12 min |
| Wed 30 Sept | 86980 23:02 | +29 min | +29 min |
| Tue 29 Sept | 86980 22:36 | +3 min | +13 min |
| Mon 28 Sept | 86980 22:34 | +1 min | +10 min |
| Sat 26 Sept | Weymouth C.H.S. 22:33 | 0 min | +1 min |
| Fri 25 Sept | Weymouth C.H.S. 22:35 | +2 min | +10 min |
| Thu 24 Sept | 86980 22:42 | +9 min | +10 min |
| Wed 23 Sept | 86980 23:04 | +31 min | +34 min |
| Tue 22 Sept | 86980 22:36 | +4 min | +5 min |
| Mon 21 Sept | 86980 22:46 | +12 min | +12 min |
| Sat 19 Sept | 86980 22:47 | +15 min | +15 min |
| Fri 18 Sept | Weymouth C.H.S. 23:10 | +38 min | +42 min |
| Thu 17 Sept | 86040 20:59 | +52 min | +52 min |
| Wed 16 Sept | 86980 23:03 | +30 min | +30 min |
| Tue 15 Sept | 86980 22:36 | +4 min | +12 min |
| Mon 14 Sept | 86980 22:37 | +4 min | +9 min |
| Sat 12 Sept | 86980 22:33 | 0 min | +2 min |
| Fri 11 Sept | 86980 22:34 | 0 min | +6 min |
| Thu 10 Sept | 86980 22:34 | +1 min | +4 min |
| Wed 9 Sept | 86980 22:35 | +3 min | +11 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.