Practice question

What is the meaning of a yellow diamond sign with a black arrow curving sharply back like a hairpin?

Hairpin or extremely sharp curve ahead, requiring significant speed reduction, staying far right, and keeping tight rein control
Expressway entry ramp
One-way street
Roundabout ahead

Answer: A — Hairpin or extremely sharp curve ahead, requiring significant speed reduction, staying far right, and keeping tight rein control

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