If you see a _________ sign in your lane, it means you are going the wrong way.

Explanation

You are not allowed to enter a roadway at which a Do Not Enter sign is posted. You will see such signs at roadway openings that you are not to enter or where you would be driving the wrong way on a one-way roadway. You will see these signs at exit ramps, in crossovers on divided roadways, and at numerous locations on one-way roads.