What Google Says:
If you provide a transportation service that is open to the public, and operates with fixed schedules and routes, we welcome your participation – it is simple and free.
Source: Google Maps – Transit
Why You Should Use It:
Map out your transit itinerary with Google Maps Transit.
In the news: Transit features have been added to the Google Maps app for iOS7
http://news.google.com Fri, 01 Nov 2013 18:07:06 GMT
Google Maps get updated for iOS 7, adds transit featurestuaw.comGoogle has updated Google Maps for iOS, adopting iOS 7 design elements and some additional features. While the app has been iOS 7-compatible since the new OS became available, it still featured older iOS 6 elements, most noticeably in the iOS 6-styleﾠ…
Google talks about how their live transit updates work in Google Maps