indicator_fault_state

This data flow indicates the status of indicators being managed by the Provide Device Control function. It contains the indicator type (which includes its identity) and a status, including any faults detected. This will allow the traffic control strategy selection process to adjust its strategy to take account the current status. It consists of the following data items each of which is defined in its own DDE:

indicator_status_from_traffic_meters
+ indicator_status_from_signals

Sub Data Flows

Parent Data Flows

Associated PSpecs