an unspecified impact level
Cause code IBT21
Plain-language explanation, impact details and live examples.
Last updated 21 May 2026, 17:05:14Arbete
Announcement phrasing
Train operators typically phrase this cause as:
Arbete
Live trains referencing IBT21
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 IBT21
What does cause code IBT21 mean?
Arbete
How serious is cause code IBT21?
It is classified as an unspecified impact level.
Which trains are currently affected?
See the live examples above. The list refreshes every minute.