This data flow is used within the Manage Traffic function and contains the identity(ies) of the traffic sensors that are used to determine the number of spaces in the parking lot that are currently occupied. There are two types of sensor, those measuring input flow (vehicles entering the lot) and those measuring output flow (vehicles leaving the lot). The data flow consists of the following data items each of which is defined in its own DDE:

+ list_size{unit_number + parking_lot_sensor_type}

Sub Data Flows

Parent Data Flows

Associated PSpecs