Advanced Ground Instructor (AGI) Practice Exam

What does a blue ground light indicate?

1. Service road lighting

2. Taxiway lighting

3. Runway lighting

4. Emergency vehicle lighting

The correct answer is: Taxiway lighting

A blue ground light is used to indicate taxiway lighting in an airport environment. These lights are positioned along taxiways to provide pilots with visual guidance for safe navigation when taxiing their aircraft. The blue color is standardized in aviation lighting to help differentiate taxiways from other types of lighting, such as runway lighting, which typically has a different color code. Taxiway lights are crucial for pilots, especially during low visibility conditions, as they aid in preventing runway incursions and ensuring the safe movement of aircraft on the ground. Knowing that blue lights indicate taxiways helps pilots and ground personnel understand the layout of an airport and navigate correctly while taxiing to and from runways and terminals.