Distinguish between special ways a passenger may board or alight at a stop. The majority of boardings and alightings will be of type "default" -- a regular boarding or alighting at a regular transit stop. Currently, the only non-default types are related to GTFS-Flex, but this pattern can be extended as necessary.
| value | description |
|---|---|
| DEFAULT | A regular boarding or alighting at a fixed-route transit stop. |
| FLAG_STOP | A flag-stop boarding or alighting, e.g. flagging the bus down or a passenger asking the bus driver for a drop-off between stops. This is specific to GTFS-Flex. |
| DEVIATED | A boarding or alighting at which the vehicle deviates from its fixed route to drop off a passenger. This is specific to GTFS-Flex. |