Whilst checking something else, I came across this website.
https://www.actbustracker.com/
Shows when the tracker last logged in, well for those with a tracker installed. Nothing major except a CDC Canberra Bus last logged in back in April.
⚠️ DISCLAIMER: This website utilises the publicly available GTFS feeds for ACTION, Canberra Metro and CDC; and also obtains fleet and depot information from ACT Bus Fleetwiki, but there is no association between actbustracker.com and actbus.net
There are also links available for similar trackers for NSW, Qld and SA buses and Trainlink coaches. Canberra Metro is the only tram line that is included in the trackers.