GTFS realtime update interval
We are currently using the GTFS realtime vehicle position updates to track the SL bus positions in Stockholm. From our last question here, we were told SL can provide their position every other second.
However, when we are measuring the vehicle position from our monitoring, we can see that while most updates are indeed at 2s(84%), there are many occassions where it is 3-4s(14%) with outliers at 5-7s(2%).
Is this the expected behaviour of the system or are there any issues currently ongoing with the GTFS update frequency of SL?
Thank you for your help!