highway_sign_sequence_data

This data flow is used within the Manage Traffic function and contains data about the sequence in which a set of highway indicators must be set in order to implement a specific action, e.g. close one lane, set a speed restriction, etc. The sequences are designed to enable the action to implemented safely, e.g. a speed restriction of 40 mph could be preceded by warnings that it starts 'x' feet farther along the highway, where 'x' is the distance from the indicator to the start of the speed restriction. Sequences are not location specific and are standard for a particular action. The data flow consists of the following data items each of which is defined in its own DDE:

highway_sign_sequence_purpose
+ indicator_list


Sub Data Flows

Parent Data Flows

Associated PSpecs