Traffic and Traveller Information (TTI) - TTI Messages via Traffic Message Coding - Part 4: Coding Protocol for Radio Data System - Traffic Message Channel (RDS-TMC) - RDS-TMC using ALERT Plus with ALERT C
This document deals with the coding protocol for the multiplex broadcasting of event-orientated and status-orientated information, and it essentially describes the content of status-orientated messages. The main coding principle for status-orientated messages is to gather together the information which relates to several locations in the same message, and to transmit a so called collection number instead of transmitting directly location numbers like in the ALERT C protocol.