What is the maximum distance between white runway edge lights according to runway lighting requirements?

The maximum distance between white runway edge lights is indeed 200 feet. This standard is established to ensure that pilots have clear visual guidance when approaching or taxiing on a runway, especially under low visibility conditions or during nighttime operations. The spacing is designed to provide consistent illumination and helps to define the runway's lateral edges, enhancing both safety and situational awareness for pilots. If the lights were spaced further apart, such as 300 feet or 400 feet, it could create gaps in visibility that might lead to confusion or misjudgment of the runway's dimensions, especially at night or in adverse weather conditions where lateral reference is crucial during landing or takeoff. The 200 feet spacing strikes a balance by ensuring adequate light coverage while maintaining efficiency in light installation and maintenance.