A red circular sign containing a horizontal white bar means:

Correct answer: D – Do not enter from this direction
The red circle with a horizontal white bar is the DO NOT ENTER sign. It is placed at the beginning of one-way streets and ramps where vehicles may not enter from the direction they are traveling. A WRONG WAY sign may be posted farther along the same roadway.
Source: Pennsylvania Driver’s Manual — Ch. 2, “Regulatory Signs”



