OneBusAway, the popular real-time transit information system in the Puget Sound region developed by UW CSE, has gone national, with deployments in New York City and Detroit, along with experimental deployments in Tampa, Atlanta, and Washington DC.
In New York, MTA is using OneBusAway as the basis for its Bus Time service. In Detroit, a CodeForAmerica team used it for a text-messaging system, TextMyBus.
But you live in the Puget Sound region – use the original OneBusAway here.
(Brian Ferris, the CSE Ph.D. student who contributed greatly to OneBusAway, now works for Google, which one of these years will roll out a similar service. But we will crush them like a bug.)