Chiltern Railways 631T12
View line Chiltern Railways
Alerts for train 631T12
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Chiltern Railways.
The mini-map returns when the train runs
On-time ยท 30 days
93%
27/29 runs under 3 min
RT coverage: 29 full ยท 0 partial ยท 0 no data
On-time ยท 90 days
90%
77/86 runs under 3 min
RT coverage: 86 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
- Tue 29 Sept Max en route +22 min ยท last fix heading to Oxford Parkway +22 min
- Wed 4 Nov Max en route +22 min ยท last fix heading to Oxford Parkway +20 min
- Tue 8 Sept Max en route +11 min ยท last fix heading to 74425 +11 min
- Wed 23 Sept Max en route +10 min ยท last fix heading to 74425 +10 min
- Mon 21 Sept Max en route +9 min ยท last fix heading to 74425 +7 min
Distribution ยท 90 days
86 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% ยท 1
- On time 88% ยท 76
- 3โ10 min 6% ยท 5
- 10โ30 min 5% ยท 4
- 30+ min 0% ยท 0
On-time by weekday
- 92% M n=13
- 69% T n=13
- 77% W n=13
- 92% T n=13
- 100% F n=13
- 100% S n=11
- 100% S n=10
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 6 Nov | Oxford Parkway 08:53 | โ1 min | +1 min |
| Thu 5 Nov | Oxford Parkway 08:49 | 0 min | +1 min |
| Wed 4 Nov | Oxford Parkway 09:04 | +20 min | +22 min |
| Tue 3 Nov | Oxford Parkway 08:54 | +2 min | +5 min |
| Mon 2 Nov | Oxford Parkway 08:53 | 0 min | +2 min |
| Sun 1 Nov | Oxford Parkway 09:17 | 0 min | +1 min |
| Sat 31 Oct | Oxford Parkway 09:11 | โ1 min | +1 min |
| Fri 30 Oct | Oxford Parkway 09:00 | โ1 min | โ |
| Thu 29 Oct | Oxford Parkway 09:00 | โ1 min | +2 min |
| Wed 28 Oct | Oxford Parkway 09:00 | โ1 min | โ |
| Tue 27 Oct | Oxford Parkway 09:05 | +4 min | +5 min |
| Mon 26 Oct | Oxford Parkway 09:00 | โ1 min | +2 min |
| Sun 25 Oct | Oxford Parkway 10:34 | 0 min | โ |
| Sat 24 Oct | Oxford Parkway 09:11 | โ1 min | โ |
| Fri 23 Oct | Oxford Parkway 09:01 | 0 min | +1 min |
| Thu 22 Oct | Oxford Parkway 09:01 | 0 min | +1 min |
| Wed 21 Oct | Oxford Parkway 09:00 | โ1 min | +1 min |
| Tue 20 Oct | Oxford Parkway 09:00 | โ1 min | +1 min |
| Mon 19 Oct | Oxford Parkway 09:00 | โ1 min | +2 min |
| Sun 18 Oct | Islip 09:17 | 0 min | โ |
| Sat 17 Oct | Oxford Parkway 09:11 | โ1 min | +1 min |
| Fri 16 Oct | Oxford Parkway 09:00 | โ1 min | +4 min |
| Thu 15 Oct | Oxford Parkway 09:01 | โ1 min | +1 min |
| Wed 14 Oct | Oxford Parkway 09:00 | โ1 min | โ |
| Tue 13 Oct | Oxford Parkway 09:00 | โ1 min | +3 min |
| Mon 12 Oct | Oxford Parkway 09:00 | โ1 min | +1 min |
| Sun 11 Oct | Oxford Parkway 09:18 | +1 min | +1 min |
| Sat 10 Oct | Oxford Parkway 09:11 | โ1 min | +1 min |
| Fri 9 Oct | Oxford Parkway 09:00 | โ1 min | +1 min |
| Thu 8 Oct | Oxford Parkway 08:59 | 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.