What should you do?
Move into the left lane early and merge in turn, expecting slow traffic.
How to recognise it
Orange diamond with one upward arrow on the left and two blocked bars on the right.
Common confusion
Only one lane remains, so queues are more likely than with a single lane closure.
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.
