What is the operational purpose of a Visual Docking Guidance System (VDGS) in maintaining the safety of ground support equipment positioning at the gate?

A Visual Docking Guidance System is an electronic device installed on an airport terminal building that provides real-time positioning information to flight crews during the final phase of aircraft parking. Its primary operational purpose is to ensure the aircraft stops at a precise, pre-determined location, which creates a safe and standardized interface with ground support equipment. By providing a....