DANNY Alexander, the Chief Secretary to the Treasury, has claimed that the Scottish Government's plan for average speed cameras on the A9 will be ineffective and a waste of money.

The Inverness, Nairn, Badenoch & Strathspey MP said it would do little to improve safety and the money should go into the scheme to dual the route from Perth to Inverness.

But a Transport Scotland spokesman said evidence showed that average speed cameras would help cut the number of accidents, particularly fatal and serious ones.

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He added construction work to dual the entire length of the A9 could begin as early as 2015/16.