FYI you've created a gap in the Sunbury line (r17544633) and the stops in several routes were not ordered properly and were missing the "stop" role. I've fixed the stop order in changeset #169228611, but not the gaps (you can fix that). Please practice care around these relations as it can be difficult to figure out what you've intended to happen and that in turn makes it harder to correct the errors accordingly.

Also, I just noticed that you've made a lot of route relations that are complete unordered messes. These were harder to find as they were missing the public_transport:version=2 tag. I've not the time to attempt to fix them, so I'd advise that you compile a list of the routes so that you can fix them once you learn how to.