PRELIMINARY INVESTIGATION OF TEMPORAL AND CHROMATIC METHODS OF MARKING CHANNELS

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. (Author)

  • Corporate Authors:

    United States Coast Guard

    Research and Development Center, 1082 Shennecossett Road
    Groton, CT  USA  06340-6096
  • Authors:
    • Bates, R
  • Publication Date: 1974-4

Media Info

  • Pagination: 22 p.

Filing Info

  • Accession Number: 00071848
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: CGR/DC-11/74, Final Report
  • Files: NTIS
  • Created Date: Dec 19 2003 12:00AM