What does a no U-turn sign indicate?

• A. U-turns are allowed with caution
• B. U-turns are prohibited at that location
• C. U-turns are only allowed during certain hours
• D. U-turns are allowed only for emergency vehicles

Answer: (B)

A no U-turn sign clearly indicates that making a U-turn is prohibited at that specific location. This restriction is typically implemented for safety reasons, such as high traffic volume, visibility issues, or to maintain efficient flow on the road. Driver compliance with this sign helps to prevent accidents and potential gridlock that could arise from erratic turns.

The other options suggest circumstances under which U-turns could either be conditionally allowed or restricted solely to emergency vehicles, which all contradict the definitive nature of a no U-turn sign. The sign serves as an explicit instruction to drivers that such maneuvers should not be attempted, ensuring clarity in traffic regulations.