<Table> <Tr> <Td> </Td> <Td> This article's use of external links may not follow Wikipedia's policies or guidelines . Please improve this article by removing excessive or inappropriate external links, and converting useful links where appropriate into footnote references . (July 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article's use of external links may not follow Wikipedia's policies or guidelines . Please improve this article by removing excessive or inappropriate external links, and converting useful links where appropriate into footnote references . (July 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> 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 protocol into RDS Type 8A groups carried via conventional FM radio broadcasts . 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 navigation system, traffic information can be used in the system's route calculation . </P> <P> Detailed technical proposals for an RDS - TMC broadcasting protocol were first developed in the European Community's DRIVE programme research project RDS - ALERT, a partnership of the BBC, Philips, Blaupunkt, TRRL and CCETT led by Castle Rock Consultants (CRC). The main goal of the project was to develop and build consensus upon a draft standard for broadcasting RDS - TMC traffic messages in densely coded digital form . </P>

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