The A82 around Loch Lomond has become increasingly congested as the loch has become more popular with tourists for boating, particularly since restrictions were put in place in the Lake District, coincident with improvements to routes leading to the Loch from the south. On regular occasions, the road is completely congested from Luss to the Balloch roundabout. The section from Tarbet to Crianlarich, north of the section improved in the 1980s and 90s, was frequently closed overnight during September 2012, because the carriageway had become worn out and needed urgent repair, including failed surfacing and potholes. Because of the narrow width of the road, it was not possible to simply close the road in one direction at a time with temporary traffic signals, as is the general procedure elsewhere on Britain's road network. Transport Scotland justified these works by saying that only 5% of traffic used the road between 10 pm and 6 am, when the works were planned. The official diversion route from Tarbet to Crianlarich is via the A83, A819 and A85, a detour of approximately .