Hairpin curve: This symbol on a yellow warning sign stands for:
Correct answer: A hairpin curve that doubles back sharply to the right.
Answer options
AA ramp where traffic merges from the right.
BA hairpin curve that doubles back sharply to the right. Correct
CA gentle curve bending slightly to the left.
Why
The arrow rises, swings over to the right, and heads back down, which marks a hairpin: a curve where the road reverses direction almost completely. Cut your speed sharply before you enter it.