Airfield lighting refers to the systems of lights used at airports to guide pilots during takeoff, landing, and taxiing. These lights are crucial for ensuring safety, especially during low visibility conditions such as fog or nighttime operations. Common types of airfield lighting include runway lights, taxiway lights, and approach lights, each serving specific functions to help pilots navigate the airfield. The lighting systems are designed to be highly visible and are often color-coded. For example, runway edge lights are typically white, while threshold lights are green at the beginning of the runway and red at the end. Properly functioning airfield lighting is essential for the efficient operation of airports and the safety of aircraft.