This data flow is used within the Manage Traffic function. It contains the actual state of operation of the roadside indicators used to pass instructions to drivers and travelers on the roads (surface streets) and at railroad grade crossings in the geographic and/or jurisdictional area(s) served by the function. The data is used for local monitoring of the operation of indicators. The data flow consists of the following data items each of which is defined in its own DDE:

+ list_size{indicator_type
+ indicator_response_state}

Sub Data Flows

Parent Data Flows

Associated PSpecs