Usually TripView works well, unless there is a “malfunction” at the driver’s end. I think that something it is switched off for a while? If this is the case, when one checks the times it won’t provide an update. Sometimes the stated time will show up, but it doesn’t allow passengers to track the bus. Then, out of the blue, the bus WILL turn up when it hasn’t shown up on the app. I hope this explains the situation, which can be very frustrating, especially if one has decided to go to a different bus stop etc. Thank you.