Elizabeth line 509T77
Alerts for train 509T77
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Elizabeth line.
Running now · updated 13:49
Running now +2 min
Today it is running worse than usual: typical arrival delay is 0 min; 100% of the last 5 runs arrived on time.
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
- Sat 29 Aug Max en route +6 min · last fix heading to Heathrow Terminal 5 +5 min
- Sat 15 Aug Max en route +3 min · last fix heading to Heathrow Terminal 5 +3 min
Distribution · 90 days
15 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 87% · 13
- 3–10 min 13% · 2
- 10–30 min 0% · 0
- 30+ min 0% · 0
On-time by weekday
- 100% M n=1
- — T n=0
- — W n=0
- — T n=0
- — F n=0
- 85% S n=13
- 100% S n=1
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 7 Nov | Maryland 13:44 | +1 min | +2 min |
| Sat 31 Oct | Heathrow Terminal 5 14:42 | 0 min | — |
| Sat 24 Oct | Heathrow Terminal 5 14:45 | +2 min | +2 min |
| Sat 17 Oct | Heathrow Terminal 5 14:42 | −1 min | — |
| Sat 10 Oct | Heathrow Terminal 5 14:42 | 0 min | +1 min |
| Sat 3 Oct | Heathrow Terminal 5 14:42 | 0 min | +1 min |
| Sun 27 Sept | Heathrow Terminal 5 11:37 | +2 min | +4 min |
| Sat 26 Sept | Heathrow Terminal 5 14:42 | 0 min | +1 min |
| Sat 19 Sept | Heathrow Terminal 5 14:43 | 0 min | +1 min |
| Sat 12 Sept | Heathrow Terminal 5 14:42 | −1 min | — |
| Sat 5 Sept | Heathrow Terminal 5 14:42 | 0 min | +1 min |
| Mon 31 Aug | Heathrow Terminal 5 14:44 | 0 min | +2 min |
| Sat 29 Aug | Heathrow Terminal 5 14:48 | +5 min | +6 min |
| Sat 22 Aug | Heathrow Terminal 5 14:44 | +2 min | +3 min |
| Sat 15 Aug | Heathrow Terminal 5 14:45 | +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.