Preliminary Investigation of Temporal and Chromatic Methods of Marking Channels
COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT
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This report summarizes the results of initial research designed to determine the best methods for marking straight lighted channels. Two methods were examined regulated time flashing temporal and color flashing chromatic. In the temporal method all 30 test observers chose the ordered systems sequential and simultaneous superior to the unordered systems random, random-sequential, and random-simultaneous. Within the test conditions for ordered systems, sequential flashing was chosen best. In the chromatic method a two color combination for channel marking was chosen best a white-red system against a lighted background and a green-red or white-red system against a dark background. This preliminary work shows an advantage to ordered temporal systems of marking channels as well as the advantage of a two color system. The results of this research could provide guidance for design of future channel lighting systems.
- Marine Engineering