Preliminary Investigation of Temporal and Chromatic Methods of Marking Channels

Abstract

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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1974
Accession Number
AD0783554

Entities

People

  • Robert Bates

Organizations

  • United States Coast Guard Research & Development Center

Tags

DTIC Thesaurus Topics

  • Buoys
  • Channel Models
  • Coast Guard
  • Data Analysis
  • Data Reduction
  • Military Research
  • Navigation
  • Navigational Aids
  • Navigational Lights
  • Observation
  • Observers
  • Test And Evaluation
  • Timing Devices
  • Transportation
  • United States
  • White Light

Readers

  • Regression Analysis.
  • Systems Analysis and Design
  • Vision Science/Vision Psychology/Cognitive Neuroscience.