New Shuttle Tracking App Starting July 1. We’re launching a new shuttle tracking app and transitioning our technology during the month of July. Starting July 1st, live tracking will be temporarily unavailable, but shuttles will continue to run on their regular summer schedules. Passio Go! will be discontinued July 1, please download our new tracking app, Citymapper. For real-time shuttle locations during the transition, call Dispatch at 617-496-0400. Learn more here.