Answer :
Final answer:
The rectangular sign directs the driver to change speed and vehicle position to merge into the lane safely.
Explanation:
The correct sign that directs the driver to change speed and vehicle position to merge into the lane safely is the rectangular sign.
This sign is typically used to indicate a lane merge ahead, and it advises the driver to adjust their speed and position accordingly to merge smoothly and safely with the traffic in the adjacent lane.
By following the instructions on the rectangular merge sign, drivers can avoid potential accidents or disruptions in traffic flow.
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