This data flow is used within the Manage Emergency Services function to request activation of a barrier system (gates and other automated systems for roadway entry control) or safeguard system (e.g. blast shields and other automated equipment used to mitigate the impact of incidents on transportation infrastructure). It consists of the following data items each of which is defined in its own DDE:

list_size + list_size{station_id
+ device_identity
+ barrier_system_control_request
+ safeguard_system_control_request}

Sub Data Flows

Parent Data Flows

Associated PSpecs