Disruptions in Austria

From the operators themselves: Mobilitätsverbünde Österreich for every state, Wiener Linien and ÖBB. ÖffiGo collects them and shows them unchanged.

The page checks every few seconds whether anything has changed and then reloads the list by itself. Wiener Linien notices arrive within half a minute, those from the other states and from ÖBB within a few minutes.

A disruption is unplanned: an accident, an ambulance call-out, a breakdown. Works are planned and usually mean a diversion, a moved stop or a replacement service. Notices are everything else, such as changed times on a public holiday.

The notice is not in force yet but already scheduled, such as works starting next week. Once it applies, it moves up into its group.

Yes, from the operator. For Wiener Linien and ÖBB disruptions, the notice's page says where to get it.