What impossible situation is depicted in the following picture?

1. Correct answer: the road signs contradict each other.
2. A “one-way road” sign should be placed on both sides of the roadway.
3. A “right of way” sign must be placed on both sides of the roadway.
4. A “one-way road” sign should be placed on the left side of the roadway.

WhyThe sign on the left contradicts the sign on the right, so such a situation cannot exist. Look for the pair of incompatible signs.