Also, the documentation lists ProgressStatus as an optional indicator. Is it fair to say that a value for ProgressStatus (e.g. layover, prevTrip, spooking) will only be present to indicate that the associated data is not
for an active trip the bus is currently on? I am asking because I want to find an easy way to approximate which records do not correspond with in-progress trips, and I see from previous threads that "noProgress" in ProgressRate could simply mean a bus is stuck in traffic during an active trip.