Does anyone know whether any bits of road in the UK have been designated as potential sites?
I've spotted a few over the years. Best example is the A74(M) north of Lockerbie - next to the Lockerbie lorry park at Hanginshaw.
From the farm bridge at the south end to the start of the gentle right curve at the north is 2200m or 7200 feet with no obstructions and an easily demountable central wire barrier...........