[et-al]

Ghost busses are most likely an issue with the GTFS real-time data from the agency, which the app just displays.

I’ve personally also experienced the same issue with SF’s Muni.

[comte7092]

Can’t speak for Chicago, but this is most likely the case.

As someone who has first hand experience with transit agencies, the tech infrastructure is unfortunately not to the level it should be.

That said, google isn’t always the easiest to communicate with when trying to fix such issues.