What do you do?

You're at a stop sign and in front of you is a "One Way" sign pointing to a "Do Not Enter" sign. Which way do you go? I suppose you turn around and head back the way you came. This reminds me of a day many years ago that I was driving in the West Bottoms area of Kansas City. I was going down a long one way road. The road ended at some railroad tracks. There were no other roads along the way. What was I supposed to do? If I turned around, I'd be going the wrong way on a one way street. Obviously, I had no choice. Could I have successfully argued a ticket if I got one?