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Celnet Traffic Line Traffic Master - has it been withdrawn?

For a dozen or so years I have had a "Trafficmaster" device on my dashboard which indicated when motorways and other major roads ahead were congested. It operated via sensors and transmitters on bridges over the road. This often prompted a call to a premium rate line. Recently the information has not been forthcoming when I have approached motorway junctions. Has the service been withdrawn?

Asked on 7 November 2012 by John R. Epsom, Surrey

Answered by Honest John
Yes. It has been replaced by a new smartphone service.
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