Where may vehicles be parked?

Parking vehicles in designated parking areas on the apron is essential for maintaining safety and efficiency in airport operations. These areas are specifically marked for parking and are managed to ensure that they do not obstruct airport traffic, aircraft movement, or emergency access. Proper parking in these designated zones helps reduce the risk of accidents and ensures that other airport operations can function smoothly.

The other options lack the necessary focus on safety protocols and the adherence to designated areas, which are critical in the aviation environment where space is limited, and operational integrity must be maintained.