You pass a WRONG WAY sign and realize that you have started up an Interstate exit ramp in the wrong direction. What should you do?

Correct answer: Pull onto the shoulder, stop, and turn around only when no traffic is coming.

Why

As you enter the Interstate, watch for DO NOT ENTER and WRONG WAY signs, which warn that you are about to go the wrong way on an exit ramp. If you find yourself going the wrong way, pull onto the shoulder and stop, and turn around only when there is no oncoming traffic. Wyoming law allows traffic onto or off a controlled-access highway only at the set entrances and exits, and a one-way road must be driven only in the marked direction.

Verified against Wyoming Rules of the Road, Class C · Entering the Interstate · p. 60