Which of the following three vehicles is not in the correct lane, according to the traffic sign?

1. All three are driving according to the law.
2. Correct answer: The light (private) vehicle (1).
3. The fire-engine (2).
4. The purple pickup truck (3).

WhyThe Keep right sign requires passing the island on its right. The light private car is driving to its left, so it is not in the correct lane.