To plan a trip between the East Bay and Peninsula on the Dumbarton Express (and other transit agencies serving the area), you can visit 511.org for maps, and for nearby routes and options. You can visit Google Transit, enter your start and destination addresses, and get bus and walking directions displayed on a Google map.
Real-Time Departure information is also available at 511.org. When accessing Real-Time Departures, you can get your prediction time faster by using bus stop ID numbers. Each stop is assigned a unique five-digit number to use as a short-cut when making a Real-Time Departure request.