Simply choose your route, direction, and. Verkkocta bus tracker uses gps devices to report bus location data (and more) back to our cta servers. We can then, in real time, show you where buses are on a map. Verkkouse cta train tracker for estimated arrivals at your stop or see cta trains on a map. Verkkocta bus tracker uses gps devices to report bus location data (and more) back to our servers. We can then, in real time, show you where buses are on a map and. Simply choose your route, direction, and. Verkkowelcome to cta bus tracker selected feed: __route__ step 2 choose your direction of travel: Verkkochoose a tracker to use: Cta bus tracker smget estimated arrival times for cta buses or see them on a map. Cta train tracker smget estimated arrival times for.