Greater Anglia 491Y51
View line Greater Anglia
Alerts for train 491Y51
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Greater Anglia.
The mini-map returns when the train runs
On-time ยท 30 days
96%
23/24 runs under 3 min
RT coverage: 24 full ยท 0 partial ยท 0 no data
On-time ยท 90 days
89%
67/75 runs under 3 min
RT coverage: 75 full ยท 0 partial ยท 0 no data
Typical delay
โ1min
Median at arrival, 90 days
30 days: โ1 min
P90
+3min
9 in 10 runs arrive with less than this
30 days: +1 min
Last 30 days
Delay at the end of each run, in minutes. One bar per run.
- On time (<3 min)
- 3โ10 min
- 10โ30 min
- 30+ min
- Partial coverage
- No data
Worst days
- Sat 22 Aug Max en route +13 min ยท last fix heading to London Liverpool Street +11 min
- Sat 8 Aug Max en route +11 min ยท last fix heading to London Liverpool Street +9 min
- Fri 14 Aug Max en route +13 min ยท last fix heading to London Liverpool Street +8 min
- Fri 11 Sept Max en route +9 min ยท last fix heading to London Liverpool Street +6 min
- Thu 20 Aug Max en route +10 min ยท last fix heading to London Liverpool Street +6 min
Distribution ยท 90 days
75 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 31% ยท 23
- On time 59% ยท 44
- 3โ10 min 9% ยท 7
- 10โ30 min 1% ยท 1
- 30+ min 0% ยท 0
On-time by weekday
- 100% M n=13
- 92% T n=12
- 92% W n=12
- 92% T n=13
- 85% F n=13
- 75% S n=12
- โ S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Mon 2 Nov | Gidea Park 19:14 | โ1 min | +1 min |
| Sat 31 Oct | London Liverpool Street 19:20 | โ2 min | +1 min |
| Fri 30 Oct | Gidea Park 19:22 | โ1 min | โ |
| Thu 29 Oct | Gidea Park 19:22 | โ1 min | +1 min |
| Wed 28 Oct | Gidea Park 19:22 | โ1 min | โ |
| Tue 27 Oct | Gidea Park 19:22 | โ2 min | +1 min |
| Mon 26 Oct | Gidea Park 19:23 | โ1 min | +1 min |
| Fri 23 Oct | Gidea Park 19:24 | 0 min | โ |
| Thu 22 Oct | Gidea Park 19:22 | โ1 min | +1 min |
| Wed 21 Oct | Gidea Park 19:21 | โ2 min | โ |
| Tue 20 Oct | Gidea Park 19:23 | 0 min | +2 min |
| Mon 19 Oct | Gidea Park 19:22 | โ2 min | โ |
| Sat 17 Oct | Gidea Park 19:23 | +1 min | +2 min |
| Fri 16 Oct | Gidea Park 19:23 | โ1 min | +1 min |
| Thu 15 Oct | London Liverpool Street 19:24 | +1 min | +3 min |
| Wed 14 Oct | Gidea Park 19:28 | +5 min | +6 min |
| Tue 13 Oct | Gidea Park 19:22 | โ1 min | +1 min |
| Mon 12 Oct | Gidea Park 19:23 | 0 min | +2 min |
| Sat 10 Oct | Gidea Park 19:22 | โ1 min | +3 min |
| Fri 9 Oct | Gidea Park 19:22 | โ1 min | +1 min |
| Thu 8 Oct | Gidea Park 19:22 | โ1 min | +1 min |
| Wed 7 Oct | Gidea Park 19:22 | โ2 min | +1 min |
| Tue 6 Oct | Gidea Park 19:23 | 0 min | +1 min |
| Mon 5 Oct | London Liverpool Street 19:21 | โ2 min | +5 min |
| Sat 3 Oct | London Liverpool Street 19:20 | โ2 min | +1 min |
| Fri 2 Oct | London Liverpool Street 19:22 | โ1 min | +1 min |
| Thu 1 Oct | London Liverpool Street 19:21 | โ2 min | +1 min |
| Wed 30 Sept | London Liverpool Street 19:21 | โ2 min | +1 min |
| Tue 29 Sept | London Liverpool Street 19:22 | โ2 min | +2 min |
| Mon 28 Sept | London Liverpool Street 19:21 | โ2 min | +1 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.