an unspecified impact level
Cause code ONK01
Plain-language explanation, impact details and live examples.
Last updated 21 May 2026, 17:05:06pandemi
Announcement phrasing
Train operators typically phrase this cause as:
pandemi
Live trains referencing ONK01
Snapshot of services that mentioned this cause during the past 90 minutes and the next 3 hours.
Updated 21 May 2026, 17:05
We can't find any current trains referencing this cause.
Frequently asked questions about cause code ONK01
What does cause code ONK01 mean?
pandemi
How serious is cause code ONK01?
It is classified as an unspecified impact level.
Which trains are currently affected?
See the live examples above. The list refreshes every minute.