Using the station prefab and adding the graph for the station makes the station work. However the even OnStationEntered and OnStationExited don't fire when I sit and leave the station.
Here the script I used in U# to test this (1st image).
I used a similar script for the pickups, and the pickups fire every event. So it is a problem with the stations.
Here are the logs resulting of entering and exiting the station (2nd image).