This data flow is used to relay an advanced automatic crash notification (AACN) messages from the roadside equipment to the responding center. In this case, equipped roadside devices that have collected messages from the originating disabled vehicle or another relay vehicle. This consists of the following items each of which is defined in its own DDE:

+ location_identity
+ list_size
+ list_size{vehicle_emergency_request
+ relay_number
+ relay_vehicle_id
+ relay_vehicle_location
+ time}

Sub Data Flows

Parent Data Flows

Associated PSpecs

Parent Information Flows