EVALUATION OF RUNWAY CENTERLINE, HIGH-SPEED EXIT TAXIWAY AND RUNWAY-REMAINING LIGHTING SYSTEMS FOR CATEGORY III OPERATIONS.

A project was undertaken to determine the minimum visibilities at which a pilot could remain an effective part of the aircraft control loop while using the United States standard runway and exit centerline lighting for guidance during takeoffs and rollouts and to evaluate the effectiveness of a color-coded centerline which indicates the amount of runway remaining. The project was expanded to include evaluation of green exit centerline lights as a way to reduce or eliminate this confusion. It was concluded that 1 The United States standard runway centerline lighting configuration provides adequate takeoff and rollout guidance along the runway with visibilities as low as 200 feet 2 the present all-white United States standard runway centerline lighting configuration presents no confusion in visibilities as low as 200 feet if exit lights are turned off or the exit centerline fixtures have green filters installed and fixtures are spaced 50 feet apart and 3 a color-coded runway centerline lighting configuration provides runway-remaining information. Author