What does a DO NOT ENTER sign prohibit?

Correct answer: D. – Entering a roadway or ramp against the authorized direction of traffic
A DO NOT ENTER sign identifies an approach where vehicles must not enter from that direction. It is commonly placed where entry could put a driver against the authorized traffic flow on a one-way roadway or ramp. It does not indicate a full parking lot, construction area, or dead-end street.
Source: Oklahoma Driver Manual — Ch. 4, “Regulatory Signs”



