Represents conditions for when an AlertPatch is applicable Values are defined in the SIRI SituationExchange-xsd
| value | description |
|---|---|
| START_POINT | at departure or when passengers expect to board |
| DESTINATION | for passengers expecting to disembark, or at the last stop |
| NOT_STOPPING | when passing a stop |
| EXCEPTIONAL_STOP | for passengers expecting an interchange |
| REQUEST_STOP | when a passenger must request the serving of a stop |
| STOP | affects all interactions with the stop (boarding, alighting, arrival, departure, interchanges |