A yellow diamond sign shows the road curving right and then left. What does it warn of?

Correct answer: B – Reverse curves beginning to the right
This reverse-curve sign warns of two successive curves in opposite directions. The symbol shows that the first curve is to the right and the second is to the left. As with other warning signs, be prepared to adjust your speed and path for the roadway alignment.
Source: HRS § 291C-39 – Traffic control devices; uniform standards and specifications, MUTCD, 11th ed. with Revision 1 — W1-4, “Horizontal Alignment—Reverse Curve”




