Which type of lights emit a blue color on airport taxiways?

Taxiway edge lights are specifically designed to emit a blue color, serving a crucial function in guiding pilots during taxiing operations. These lights help define the edges of taxiways, making it easier for pilots to navigate safely between runways and terminals, especially in low visibility conditions or at night.

The color blue is standardized for taxiway edge lights to differentiate them from other types of airport lighting. This unique color helps maintain clarity and reduces confusion with other lights that might be present in the airfield environment. For instance, runway edge lights typically emit white light, while approach lights have a combination of white and red lights to indicate the approach path. Obstacle lights also follow specific color codes, often using red to signal hazards. Therefore, the distinctive blue light of taxiway edge lights plays an essential role in airport safety and navigation.