This standard primarily addresses the needs of RDS-TMC ALERT-C messages, which are already being implemented. However, the modular approach used here is intended to facilitate future extension of the location referencing rules to other traffic and travel messaging systems.
The location referencing rules defined in this standard address the specific requirements of Traffic Message Channel (TMC) systems, which use abbreviated coding formats to provide TTI messages over mobile bearers (e.g. GSM, DAB) or via exchange protocols like DATEX. In particular, the rules address the Radio Data System - Traffic Message Channel (RDS-TMC), a means of providing digitally-coded traffic and travel information to travellers using a silent data channel (RDS) on FM radio stations, based on the ALERT-C protocol.
ISO 14819-3:2004 history
2021ISO 14819-3:2021 Intelligent transport systems - Traffic and travel information messages via traffic message coding - Part 3: Location referencing for Radio Data System-Traffic Message Channel (RDS-TMC) using ALERT-C
2013ISO 14819-3:2013 Intelligent transport systems.Traffic and travel information messages via traffic message coding.Part 3: Location referencing for Radio Data System.Traffic Message Channel (RDS-TMC) using ALERT-C
2004ISO 14819-3:2004 Traffic and Travel Information (TTI) - TTI messages via traffic message coding - Part 3: Location referencing for ALERT-C