This DFD flow from Support Transit Security and Coordination to Provide Transit Vehicle Security contains the command to disable a transit vehicle or to reset transit vehicle disabling if previously set as well as information concerning wide area alerts and response to vehicle alarms. The data flow consists of the following data items each of which is defined in its own DDE:

+ transit_vehicle_disable_reset
+ secure_transit_vehicle_alarm_acknowledge_for_transit
+ on_board_traveler_alarm_response_from_transit
+ transit_vehicle_operator_wide_area_alerts

Sub Data Flows

Parent Data Flows

Associated PSpecs