On which side should you drive related to a tail/wingtip clearance line?

Driving on the building-side of the tail/wingtip clearance line is the correct practice because it ensures that vehicles maintain a safe distance from the aircraft and avoid potential collisions with the aircraft's tail or wingtips. This approach prioritizes safety in an environment where many aircraft are operating, and where even a slight encroachment into the clearance zone can pose significant risks.

When driving on the building-side, the vehicle is positioned away from the operational area of the aircraft, allowing for better visibility and maneuverability while ensuring that the vehicle does not unintentionally enter the path of an aircraft’s movements. This practice aligns with airport regulations designed to enhance safety on the airside, where the proximity to aircraft operations is critical for all vehicle operators to understand.

In contrast, positioning the vehicle on the line itself, the opposite side of the line, or in the center of the clearance zone would not provide the necessary safety margin required in high-traffic areas around aircraft. Such positions could lead to increased risks of accidents and violations of airside operational protocols. Therefore, adhering to driving on the building-side of the line is essential for the safety of both vehicle operators and aircraft personnel.