A driver of a Ford Transit Connect has successfully challenged a speeding ticket by using vehicle tracking technology installed in the vehicle.
Gareth Powell was clocked doing 61mph in a 50mph zone by a speed gun on the A4174 near Bristol on 28 November 2008. He was working as an employee at MD Building Services Ltd.
Powell contacted Navman Wireless, whose vehicle tracking records proved that the van had been travelling at 48mph.
He said: "I'm an extremely careful driver and I was certain I hadn't broken the law."
The case was dismissed by the District Judge at Bath & Wansdyke Magistrates Court on 30 October.
Navman Wireless IT director Barry Neill, who attended the court hearing as an expert witness, says: "The GPS fix on Gareth's vehicle from 
the tracking system was excellent when he was clocked by the speed gun. He adds: "The eight satellites locating his vehicle were advantageously positioned. Under good conditions, GPS tracking technology is accurate to within three metres."