CycleTracks uses GPS support to track users’ bicycle trip routes around San Fransisco. It's simple to use: tap Start to start recording your ride, Save at the end, and specify a purpose (commuting, shopping, exercise, etc.). Data representing the purpose, route, date and time are sent to the Transportation Authority’s servers. (All personally identifiable data will be kept confidential.) Users can cancel a trip at any time for any reason and no data will be sent unless explicitly directed by the user.)
Think of it as a travel survey that asks you why and where you are riding, but automatically maps your route rather than asking you to write it down from memory.