Elizabeth line 509H55
View line Elizabeth line
Alerts for train 509H55
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.
The mini-map returns when the train runs
On-time · 30 days
75%
3/4 runs under 3 min
RT coverage: 4 full · 0 partial · 0 no data
On-time · 90 days
92%
11/12 runs under 3 min
RT coverage: 12 full · 0 partial · 0 no data
Typical delay
0min
Median at arrival, 90 days
P90
+2min
9 in 10 runs arrive with less than this
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 19 Sept Max en route +15 min · last fix heading to Heathrow Terminal 4 +12 min
Distribution · 90 days
12 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 92% · 11
- 3–10 min 0% · 0
- 10–30 min 8% · 1
- 30+ min 0% · 0
On-time by weekday
- 100% M n=1
- — T n=0
- — W n=0
- — T n=0
- — F n=0
- 91% S n=11
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 10 Oct | Heathrow Terminal 4 23:35 | 0 min | +2 min |
| Sat 3 Oct | 73251 23:28 | −1 min | +3 min |
| Sat 26 Sept | Heathrow Terminal 4 23:37 | +1 min | +4 min |
| Sat 19 Sept | Heathrow Terminal 4 23:47 | +12 min | +15 min |
| Sat 12 Sept | Heathrow Terminal 4 23:35 | +1 min | +3 min |
| Mon 31 Aug | Heathrow Terminal 4 23:35 | 0 min | +1 min |
| Sat 29 Aug | Heathrow Terminal 4 23:34 | −1 min | +2 min |
| Sat 22 Aug | Heathrow Terminal 4 23:37 | +1 min | +3 min |
| Sat 15 Aug | Heathrow Terminal 4 23:36 | +2 min | +2 min |
| Sat 8 Aug | Heathrow Terminal 4 23:35 | 0 min | +1 min |
| Sat 1 Aug | Heathrow Terminal 4 23:34 | 0 min | +2 min |
| Sat 25 Jul | Heathrow Terminal 4 23:34 | 0 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.