Advanced Ground Instructor (AGI) Practice Exam

What does a white ground light indicate?

1. Service road lighting

2. Runway lighting

3. Taxiway lighting

4. Emergency vehicle lighting

The correct answer is: Runway lighting

A white ground light is typically used in aviation to indicate runway lighting. This is part of the lighting system designed to enhance visibility and safety during takeoff and landing phases of flight, especially during low visibility conditions. Runway lighting is crucial for pilots to correctly identify the runway environment, which includes the edges of runways, any potential hazards, and the alignment for takeoff and landing. While other options, such as taxiway lighting or service road lighting, do involve ground lights, they are distinguished by different colors or specific configurations. Taxiway lighting uses blue lights, while service road lighting is generally not associated with the runway and is typically situated in areas like maintenance paths. Emergency vehicle lighting would not typically be indicated by white lights in this context. Understanding the color and purpose of ground lights is essential for both pilots and air traffic controllers to ensure safe and efficient operations at airports.