Traffic Message Channel - INCONTROL Touch Systems Only
The Traffic Message Channel (TMC) is a specific application of the Frequency Modulation (FM) Radio Data System (RDS) used for broadcasting real-time traffic and weather information. Data messages are received and decoded by the Audio Head Unit (AHU). The AHU processes the received information and alerts the driver and offers alternative route guidance to avoid the incident.
Each traffic incident is sent as a TMC message. One message consists of an event code and a location code in addition to time delay details. The message is coded and can be translated by the AHU into the market language. Location code tables assign numbers to locations on the road network. The location tables are integrated in the maps stored on the Secure Digital (SD) memory card. The source of traffic information is typically police, traffic cameras and local network stations.
The TMC system uses the existing FM2 antenna located in the rear window and the audio system antenna amplifiers to pass the signals to the AHU.
Traffic data from the TMC is processed by the AHU for output on the speaker system.