South Western Railway 871D51
View line South Western Railway
Alerts for train 871D51
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
68%
13/19 runs under 3 min
RT coverage: 19 full · 0 partial · 0 no data
On-time · 90 days
63%
33/52 runs under 3 min
RT coverage: 52 full · 0 partial · 0 no data
Typical delay
+1min
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
- Fri 18 Sept Max en route +46 min · last fix heading to Dorking +44 min
- Mon 27 Jul Max en route +18 min · last fix heading to Dorking +18 min
- Thu 10 Sept Max en route +19 min · last fix heading to Dorking +17 min
- Fri 16 Oct Max en route +12 min · last fix heading to Dorking +9 min
- Tue 8 Sept Max en route +10 min · last fix heading to Dorking +9 min
Distribution · 90 days
52 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 13% · 7
- On time 50% · 26
- 3–10 min 31% · 16
- 10–30 min 4% · 2
- 30+ min 2% · 1
On-time by weekday
- 82% M n=11
- 62% T n=13
- 63% W n=8
- 45% T n=11
- 67% F n=9
- — S n=0
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 20 Oct | Dorking 18:55 | 0 min | +2 min |
| Mon 19 Oct | Dorking 18:57 | +1 min | +4 min |
| Fri 16 Oct | Dorking 19:05 | +9 min | +12 min |
| Thu 15 Oct | Dorking 18:55 | −1 min | +1 min |
| Wed 14 Oct | Box Hill & Westhumble 18:58 | +2 min | +2 min |
| Tue 13 Oct | Dorking 18:57 | +1 min | +4 min |
| Mon 12 Oct | Box Hill & Westhumble 19:04 | +8 min | +10 min |
| Thu 8 Oct | Dorking 19:00 | +4 min | +5 min |
| Tue 6 Oct | Dorking 19:02 | +7 min | +8 min |
| Mon 5 Oct | Box Hill & Westhumble 18:54 | −2 min | +1 min |
| Fri 2 Oct | Dorking 18:53 | −2 min | — |
| Thu 1 Oct | Dorking 18:58 | +2 min | +9 min |
| Wed 30 Sept | Dorking 18:55 | −1 min | +3 min |
| Tue 29 Sept | Dorking 18:58 | +2 min | +5 min |
| Mon 28 Sept | Dorking 18:54 | −2 min | +1 min |
| Fri 25 Sept | Dorking 18:55 | −1 min | +1 min |
| Thu 24 Sept | Dorking 18:53 | −3 min | +2 min |
| Wed 23 Sept | Dorking 18:59 | +3 min | +5 min |
| Tue 22 Sept | Dorking 18:59 | +4 min | +5 min |
| Fri 18 Sept | Dorking 19:38 | +44 min | +46 min |
| Thu 17 Sept | Dorking 18:55 | 0 min | +2 min |
| Wed 16 Sept | Dorking 18:54 | −1 min | +2 min |
| Tue 15 Sept | Dorking 18:53 | −1 min | +1 min |
| Mon 14 Sept | Dorking 18:55 | 0 min | +5 min |
| Fri 11 Sept | Dorking 18:53 | −2 min | +3 min |
| Thu 10 Sept | Dorking 19:11 | +17 min | +19 min |
| Wed 9 Sept | Dorking 18:54 | −1 min | +3 min |
| Tue 8 Sept | Dorking 19:03 | +9 min | +10 min |
| Mon 7 Sept | Dorking 18:56 | +1 min | +3 min |
| Thu 3 Sept | Dorking 18:59 | +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.