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Originally Posted by MD11F
some kind of public service that is free of charge and done by the local authorities I think. It came in handy to day for road construction and accidents on our return from Prescott to Phoenix.
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actually a private company the broadcasts the signal on FM channels...the service is subscription only and BMW pays for the subscription for us for 4 years.
The info comes from public data, but shortly will be enhanced by sensors placed in trucks and other public vehicles that track speed. It should also include more local info.