TMC is a specific application of FM RDS used for broadcasting real-time traffic and weather information. Data messages are received silently and decoded by a TMC-equipped navigation system, and delivered to the driver, typically by offering dynamic route guidance – alerting the driver of a problem on the planned route and calculating an alternative route to avoid the incident.

The TMC set of standards (ISO 14819-1, 14819-2, 14819-3) are maintained by TISA – Traveller Information Services Association

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The RDS Forum is a non-profit international professional industry association that has the objective to promote and maintain the RDS technology, which was developed by the European Broadcasting Union (EBU) in the early eighties as an open system to enhance FM broadcasting, primarily to enable automated tuning in mobile FM radio receivers equipped with that then new technology.

Since the year 1999 the RDS Forum maintains the RDS standards of the IEC and has a liaison status D with that organisation

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