Where should vehicles not be parked on the airside?

Parking vehicles in designated aircraft operational areas, such as runways and taxiways, is strictly prohibited due to safety and operational reasons. These areas are critical for aircraft movement, and any obstruction can pose significant risks to aviation operations. Vehicles in these zones can impede aircraft takeoffs, landings, and taxiing procedures, potentially leading to dangerous situations or accidents.

Maintaining clear and unobstructed operational areas is vital to ensuring the safety of all airport operations. By preventing unauthorized vehicles from parking in these locations, airports can maintain the necessary protocols for safe aircraft movement and effective emergency response.

The other options, such as parking in employee lots, near airport entrances, or along maintenance roads, might not directly impede aircraft operations but do raise their own safety and operational concerns within the airport environment. However, it is the designated aircraft operational areas that require the most stringent adherence to parking restrictions to protect the integrity and safety of air traffic operations.