Answer :
The diamond-shaped sign that has one arrow pointing up and one arrow pointing down is a warning sign commonly used on roads and highways.
This sign is usually placed before a hill or dip in the road to alert drivers of the change in road conditions ahead. The arrow pointing up indicates that there is a hill ahead, while the arrow pointing down indicates that there is a dip or valley ahead. The purpose of this sign is to warn drivers to slow down and adjust their speed accordingly to avoid accidents. It is important for drivers to pay attention to this sign and follow the recommended speed limit to ensure their safety and the safety of others on the road.
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