Editing Traffic message channel (section)

{{short description|Technology for delivering traffic and travel information to motor vehicle drivers}}

{{Use dmy dates|date=September 2020}}

'''Traffic Message Channel''' ('''TMC''') is a technology for delivering traffic and travel information to motor vehicle drivers. It is digitally coded using the [[ALERT C]] or [[TPEG]] protocol into [[Radio Data System]] (RDS)<ref>Dietmar Kopitz, Bev Marks. ''RDS: The Radio Data System.'' [[Artech House]], 1999.</ref> carried via conventional [[FM radio]] [[Broadcasting|broadcast]]s. It can also be transmitted on [[Digital Audio Broadcasting]] or [[satellite radio]]. TMC allows silent delivery of dynamic information suitable for reproduction or display in the user's language without interrupting audio broadcast services. Both public and commercial services are operational in many countries. When data is integrated directly into a [[in-car navigation|navigation system]], traffic information can be used in the system's route calculation.
[[File:TomTom Navigation System with RDS-TMC.jpg|thumb|A Radio Data System – Traffic Message Channel (RDS-TMC) receiver (left) attached to a [[TomTom]] navigation system via a [[USB]] cable. The other side of the receiver is connected to a [[car charger]] via an antenna-power combination cable.<ref>{{cite web|title=Traffic Receiver|url=http://www.tomtom.com/en_gb/products/your-drive/accessories/most-popular/traffic-receiver-9UC.002.00.2/|publisher=TomTom|access-date=15 June 2014}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>]]