A red circular sign with a horizontal white bar means:

Correct answer: D – Do not enter
The DO NOT ENTER sign tells drivers that they may not proceed into the roadway or entrance from that direction. It commonly prevents entry against the permitted flow of traffic. Drivers must obey the sign and choose a lawful route.
Source: W.S. § 31-5-402(a) – Obedience to devices; exceptions, 2021 Wyoming Class C Driver License Manual — “Traffic signs,” “Regulatory signs”



