signage_barrier_activated_from_roadway

This data flow from an automated barrier system causes an in-vehicle signage transmitter to send an indication of the status of the barrier system (e.g. open, closed) and whether access has been granted. The data flow may contain the actual data from which instructions to the driver and traveler can be produced by roadway information devices or it may contain a message code that causes a specific display. It consists of the following data items each of which is defined in its own DDE:

list_size
+ list_size{indicator_identity
+ barrier_info}

Sub Data Flows

• barrier_info
• indicator_identity
• list_size

Parent Data Flows

• None

Associated PSpecs/Terminators

• 1.2.7.10.1 - Control Barrier Systems
• 1.2.7.4 - Process In-vehicle Signage Data

Parent Information Flows

• barrier system status