Comment by aaronbrethorst

For anyone interested in getting the aforementioned access, you can find the 511 request URL here: https://www.transit.land/feeds/f-sf~bay~area~rg~rt

GTFS-RT data isn't a lot of fun to work with directly, though, so I'd recommend that you use an intermediary like OneBusAway (OBA) to interpret the data and give you a nicer to use API.

You can find more about OBA here: https://onebusaway.org

and our GitHub organization is here: https://github.com/onebusaway

Our docker images repo has pretty good docs about running a server: https://github.com/OneBusAway/docker

And the SDKs can all be found here: https://developer.onebusaway.org/api/sdk

(n.b. I've been a volunteer on the project for years and am currently serving as the part time exec director of the nonprofit behind OBA.)