Detours (DE) are dynamically generated situations causing closure of a whole road.
DE are procedurally generated and do not need specific data definition for specific detours. Only things you need to provide are cutscenes for road closure, road blocks and for the detour cause event.
Contents
Cutscenes data unit
DE are part of the journey event framework so they use the same cutscene units as the random road events. You can see detailed descriptions of the cutscene unit here: Documentation/Engine/Random Road Events#Cutscenes_for_random_events