The parents of a French student missing for four days have said they are 'desperate' to find him.
A93 Worst Road In Scotland For Mobile Coverage
Drivers who break down on over 4,500 miles of Britain's roads cannot call for help because there is no mobile phone coverage, a motoring charity has warned.
A study by the RAC Foundation found 4,561 miles of road - representing about 2% of the entire network - do not have any 2G coverage, which is the minimum required to make a call or send a text.
The worst road in Scotland was found to be the A93 at Glenshee.
Highland was found to be the worst affected council area in the UK with 452 milies of road with no coverage.
Argyll and Bute was third with 293 miles.
Dumfries and Galloway was in sixth place, with the Scottish Borders in eighth.
The research was based on analysis of data published by communications regulator Ofcom.
RAC Foundation director Steve Gooding said: "There are thousands of miles of road along which you would not want to break down or have an accident because calling the RAC, the emergency services or even home wouldn't be an option.
"Even where there is partial network coverage it might not be from your network provider.
"The concepts of connected cars and drivers is at the heart of much thinking about how we might make our travelling lives easier. But the best ideas in the world will fall at the first hurdle if there are no bars on the phone.''
The Typhoons had to escort a commercial jet to the airport after it lost communications.
Independence campaigners have lost an appeal against their eviction from outside the Scottish Parliament.
Parents of a French student missing in Edinburgh are making an appeal for information on where he could be.
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