An update to the buses feed scheduled for Monday 26/06 at 12:00 am will introduce the much anticipated cancelled flag for buses!
Operating agencies will now be able to flag services as cancelled, which will be pushed to the real-time feed.
An updated technical document has been uploaded to the Open Data Hub that I encourage you all to read. It outlines how the change is being implemented and what it will look like in the feed.
If you have any questions or issues please post in this thread.