This sign means:

Question

This sign alerts you to the possibility of traffic merging into the main stream of travel. After checking to your side and rear, you should move into another lane, if possible, to allow merging motorists a clear path.

Accepted Answer

Traffic is entering from another road and you should allow additional space for drivers to merge safely into the flow of traffic.

Answer

You should stop for other traffic.

Answer

Traffic is entering from another road and you should keep right.