London Overground 512U21
View line London Overground
Alerts for train 512U21
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line London Overground.
The mini-map returns when the train runs
On-time · 30 days
56%
14/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
56%
47/84 runs under 3 min
RT coverage: 84 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +2 min
P90
+5min
9 in 10 runs arrive with less than this
30 days: +5 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
- Mon 10 Aug Max en route +16 min · last fix heading to Cambridge Heath (London) +15 min
- Wed 14 Oct Max en route +9 min · last fix heading to London Liverpool Street +9 min
- Mon 5 Oct Max en route +8 min · last fix heading to London Liverpool Street +8 min
- Wed 12 Aug Max en route +7 min · last fix heading to London Liverpool Street +7 min
- Tue 29 Sept Max en route +6 min · last fix heading to London Liverpool Street +6 min
Distribution · 90 days
84 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 55% · 46
- 3–10 min 43% · 36
- 10–30 min 1% · 1
- 30+ min 0% · 0
On-time by weekday
- 50% M n=12
- 46% T n=13
- 23% W n=13
- 77% T n=13
- 83% F n=12
- 70% S n=10
- 45% S n=11
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 15 Oct | Cambridge Heath (London) 09:07 | +2 min | +2 min |
| Wed 14 Oct | London Liverpool Street 09:21 | +9 min | +9 min |
| Tue 13 Oct | London Liverpool Street 09:15 | +3 min | +3 min |
| Mon 12 Oct | Bethnal Green 09:13 | +1 min | +1 min |
| Sun 11 Oct | London Liverpool Street 13:31 | −1 min | +1 min |
| Sat 10 Oct | London Liverpool Street 11:32 | +2 min | +3 min |
| Fri 9 Oct | London Liverpool Street 09:14 | +2 min | +2 min |
| Thu 8 Oct | London Liverpool Street 09:14 | +2 min | +2 min |
| Wed 7 Oct | London Liverpool Street 09:15 | +3 min | +3 min |
| Tue 6 Oct | London Liverpool Street 09:16 | +4 min | +4 min |
| Mon 5 Oct | London Liverpool Street 09:20 | +8 min | +8 min |
| Sun 4 Oct | London Liverpool Street 13:32 | +2 min | +2 min |
| Sat 3 Oct | London Liverpool Street 11:30 | 0 min | +1 min |
| Fri 2 Oct | London Liverpool Street 09:13 | +1 min | +1 min |
| Thu 1 Oct | London Liverpool Street 09:12 | 0 min | +1 min |
| Wed 30 Sept | London Liverpool Street 09:15 | +3 min | +3 min |
| Tue 29 Sept | London Liverpool Street 09:18 | +6 min | +6 min |
| Mon 28 Sept | London Liverpool Street 09:16 | +4 min | +4 min |
| Fri 25 Sept | London Liverpool Street 09:13 | +1 min | +2 min |
| Thu 24 Sept | London Liverpool Street 09:14 | +2 min | +2 min |
| Wed 23 Sept | London Liverpool Street 09:17 | +4 min | +5 min |
| Tue 22 Sept | London Liverpool Street 09:16 | +4 min | +5 min |
| Mon 21 Sept | London Liverpool Street 09:16 | +4 min | +4 min |
| Fri 18 Sept | London Liverpool Street 09:14 | +2 min | +3 min |
| Thu 17 Sept | London Liverpool Street 09:14 | +2 min | +2 min |
| Wed 16 Sept | London Liverpool Street 09:15 | +3 min | +3 min |
| Tue 15 Sept | London Liverpool Street 09:18 | +6 min | +6 min |
| Mon 14 Sept | London Liverpool Street 09:16 | +4 min | +4 min |
| Sun 13 Sept | London Liverpool Street 13:36 | +6 min | +7 min |
| Sat 12 Sept | London Liverpool Street 11:32 | +2 min | +2 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.