What does this sign mean?

Explanation: You should move into the lanes as directed by the sign. Here the right-hand lane is closed and the left-hand and centre lanes are available. Merging in turn is recommended when it's safe and traffic is going slowly, for example at road works or a road traffic incident. When vehicles are travelling at speed this is not advisable and you should move into the appropriate lane in good time.

Category: Road and Traffic Signs

References: The Official DVSA Guide to Driving: Section 6, Highway Code: Page 102, Know Your Traffic Signs: Page 90