Which driver violated the parking rules?

Explanation

The official exam accepts that the car driver violated the parking rules. The governing rule is the additional plaque under the sign, which prescribes the manner of placing vehicles at this section; parking in a way that does not match the prescribed manner breaks the rule even where parking as such is allowed. The scene rendering does not carry enough detail to demonstrate the mismatch visually, so the rule itself is the basis to learn here.