Experienced motorists are setting their own speed limit - well under the official limit - on some of the UK's deadliest roads, according to new research from Quartix.

The study applies to rural, single lane carriageways with a 60mph speed limit. The roads are widely known to be the UK's most dangerous, with more deaths and serious injuries occurring on them than any other.

It shows that more experienced drivers are aware that it is not always safe to drive at or near the speed limit - something learned over a period of years.

Below is a table detailing 10 of Britain's deadliest roads, with exclusive data from Quartix revealing the average speed of the road or the 'free flow' rate when there is no congestion.

Location		Road	Speed Limit	Average Speed
Sussex		A285	60mph	46mph
Central Scotland		A909	60mph	47mph
Oxfordshire		A361	60mph	45mph
Plymouth		A3121	60mph	42mph
Hampshire		A32	60mph	42mph
Surrey		A217	60mph	44mph
Buckinghamshire		A40	60mph	49mph
Lancashire		A588	60mph	42mph
West Wales		A44	60mph	40mph
Shropshire		A529	60mph	45mph

Quartix telematics devices measure how fast a vehicle is travelling based on the ‘true’ safe driving speed of a particular road which, as the table above indicates, can be up to 20mph slower than the speed limit.

Andy Walters, Quartix CEO, said: "This research shows that experienced drivers are ditching the statutory speed limit and driving at what they consider to be a safe speed on rural roads.

“The problem is young drivers are often taught to drive 'to the limit' and this, put simply, is dangerous and often life threatening.

“In many ways, parents telling their children to 'stick to the speed limit' is the worst possible advice they can give. In an ideal world parents would be in the car alongside their children at all times to advise them on when to slow down and when it's safe to go faster. We know that's impossible and that's why Quartix is deploying virtual parents to fill that gap." 

Jae Pearce, director of Sky Insurance Brokers, which specialises in insuring young drivers, added: "We've now insured around 4,500 drivers whose vehicles are fitted with Quartix devices. Every time a young driver goes above the average free-flow speed we call them to discuss their driving style and remind them about how to be safe.

“The first two thousand miles of a young driver's career are the most dangerous, accounting for 80% of all claims. But we believe this new technology based on the average flow rate of rural roads rather than the technical speed limit is genuinely saving lives. Since we've been using contextual speed scoring we've had no serious accidents."