A red rectangular sign reading “WRONG WAY” means:

Correct answer: C – You are entering or traveling in a prohibited direction
A WRONG WAY sign warns that a road user is entering or traveling in the prohibited direction on a roadway or ramp. It is commonly used with DO NOT ENTER signs as part of wrong-way traffic control. It does not merely advise drivers to proceed cautiously.
Source: Manual on Uniform Traffic Control Devices, 11th ed., Revision 1 — § 2B.47, “WRONG WAY Sign (R5-1a)”

