SFAppeal wrote a great article detailing the hurdles of trying to get real time info from a public transit agency.
In the case of San Franciso Muni, they claim to own the data and also the desire for the public to access that. A Muni representative even mentioned that they want to provide their real [...]

You’d think it would be easy to change the stacking order of things you overlay in Google Maps, right? Like, no one wants that stupid AC Transit logo to go underneath the polygon they drew . . . . . you’d think . . . .
Anyways, after like five or six hours of poking [...]