Tour Scotland video of a morning drive West on the A90 road from Dundee on ancestry visit to Perth, Perthshire.The main road is a dual carriageway, with two lanes in either direction separated by a central reservation with crash barrier. The National Speed Limit applies and this varies according to the class of vehicle being driven. A safety camera vehicle is located on the police view point, which itself is located on the north verge of the main road, about 700 metres east of Junction 11 Friarton Bridge, where the M90 merges with the A85 to become the A90 trunk road.