What should you do?
Do not drive in the contra-flow lane and be careful when crossing it or turning, as buses approach from an unexpected direction.
How to recognise it
A blue rectangle with a white double-deck bus, a vertical white line, an upward arrow on the left and a downward arrow on the right.
Common confusion
Don't confuse it with a with-flow bus lane; here the arrows show traffic flowing in opposite directions.
Explanation written by the My Driving Test editorial team using the Department of Transport Traffic Signs Manual conventions and the RSA Rules of the Road.
