Editing Traffic message channel (section)

== Coverage ==
In some places, TMC coverage is smaller than that of the radio programme carrying the TMC service, therefore [[wikt:white spot|white spot]]s exist. For example, in the US, one of the two TMC commercial services is run by [[Clear Channel Communications]], whose 95 FM station urban markets typically have some level of traffic information service. Another is [[Sirius Satellite Radio]], which covers all of North America, including sparsely-populated rural areas and near-empty deserts. Although vendors are beginning{{Citation needed|date=May 2011}} to make arrangements with information systems such as CARS, operated by state police and state departments of transportation, coverage is likely to remain sketchy in some states during the next few years.