Is the TriMet 15 bus running on time, early or late?.The total trip time for the next TriMet 15 bus is, minutes. The next 15 bus leaves at, and arrives at at. What time does the next TriMet 15 bus depart from ?.The app also allows you to subscribe to receive notifications for any service alert issued by TriMet so that you can plan your trip around any active or future disruptions. Open the app to see more information about any active disruptions that may impact the 15 bus schedule, such as detours, moved stops, trip cancellations, major delays, or other service changes to the bus route.