This Function shall be capable of providing the following facilities:<br/><br/>(1) The ability to receive and store data for information and warning messages plus commands that have been output to Drivers of preceding Vehicles using the inter-urban road network.<br/>(2) Use internal sensors to detect that a Vehicle is approaching.<br/>(3) When an approaching Vehicle is detected, the ability to output to it the data for information and warning messages plus commands relevant to the management of traffic using the inter-urban road network.<br/>(4) The ability to continue with the output to approaching Vehicles, changing the data every time it is changed, and stopping output if there is no data to transmit.<br/>
(a) continuously monitor for receipt of the urban data for approaching vehicles data flow from the Output Messages & Commands to Inter-urban Roads function;<br/>(b) using internal sensors to detect the presence of approaching vehicles, putting the data in the inter-urban vehicle presence for messages data flow from the traffic entity;<br/>(c) when the data flow is received in (a) store its contents;<br/>(d) an approach vehicle is detected in (b), output the data stored in (c) in the data flow containing approaching vehicles inter-urban messages;<br/>(e) repeat (c) for every approaching vehicle, unless there is no data to output;<br/>(f) if the data flow received in (b) contains no data, clear the stored message data.<br/>
