The Role of Exterior Lights in Mid-Air Collision Prevention

摘要

This report summarizes that portion of a research program on visual collision-avoidance techniques which deals with the design and use of navigation light systems. The findings are examined from the viewpoint of the Civil Air Regulations, and a three-phase program for improvement is outlined. In Phase I, it is indicated that genuine standardization is urgently needed and can be achieved with minimum delay with a standard con sisting of red, green, and white steady-burning position lights and a red, flashing anti-collision light. In Phase II, an intermediate-range program, the one major defect of the system suggested for Phase I (the absence of left-right indication to the rear) is to be corrected by substitution of a two-color light, yellow and bluish white, for the white taillight. In Phase III, a long-range program, it is suggested that investigation into the possibility of altitude coding in light systems be continued. In all three phases, additional detailed recommendations are made to insure maximum utilization of navigation lights. (Author)