TWO motorcyclists have been airlifted to hospital with serious injuries following a three-vehicle crash on a road described as one of the most treacherous in the UK.

Police and two ambulances attended the scene on the A85 in Glen Ogle between Lochearnhead and Lix Toll, near Killin in Perthshire, following the crash at 1.45pm yesterday.

Two men were flown by air ambulance to the Southern General Hospital. A third was treated at the scene.

The road, which has been the scene of a series of serious and fatal accidents over the years, was closed while an investigation got under way.

A spokeswoman for Police Scotland said: "The A85 Lochearnhead to Lix Toll road will remain closed for several hours to allow collision investigation to be carried out."

A spokesman for the Scottish Ambulance Service said: "Two ambulances and two service helicopters attend the scene and two casualties were taken to the Southern General Hospital in Glasgow by helicopter."

A report into fatalities among bikers dubbed the road among the most dangerous in Britain in 2004. In June 2011, it claimed the life of rider James Paton, 52, of Airdrie, North Lanarkshire. He died in hospital five days after he was injured when he came off his bike while negotiating a bend.

Although there is no suggestion speeding caused the latest incident or Mr Paton's death, electronic signs have been installed that are programmed to detect a speeding motorcycle. One of the signs is at Tynreoch, St Fillans, and the second is at Twenty Shilling Wood, Comrie. A further pair have been installed on the A82, at Sloy and Ardlui.