Driving an articulated vehicle 10 metres long, on a dual carriageway outside built-up areas with 4 lanes in the same direction of travel, which lane will you use?

Correct answer

Normally the one furthest to the right, being able to use the adjacent one in certain cases.

Normally the rightmost lane; the immediately adjacent lane may be used when road or traffic conditions justify it, without obstructing a vehicle following. On a carriageway outside built-up areas with at least three lanes in the same direction, this restriction applies to combinations longer than seven metres, including the stated ten-metre articulated vehicle. It may not freely use all four lanes or all except the leftmost.