Google Maps for mobile includes transit
Last week, the new version of Google Maps for mobile added transit directions. This means that if your agency is in Google Maps/Transit, then people in your area can look up transit information from their connected mobile phone/PDA when they’re on-the-go and need the information most.
Read more about some of the handy features of the latest version of Google Maps for mobile here, Get bus and train directions on the go with Google Maps for mobile at the official Google mobile blog. Read more

