An attempt is made to bridge the gap existing between theoretical knowledge and published material on the one hand, and the practical application to an efficient outdoor flashing light warning system for railway purposes, on the other. The relative effectiveness of flashing light highway crossing signals under the full range of environmental conditions likely to be experienced in service is determined by many diverse factors, the principal ones being contrast brightness, apparent brightness magnitude, intensity of light output, signal colour, alignment and focusing of lights, and signal range. An examination is made of the above items and conclusions are drawn as to the minimum standards necessary for optimum viewing.

Media Info

  • Features: References;
  • Pagination: p. 189-207

Subject/Index Terms

Filing Info

  • Accession Number: 00047384
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Nov 14 1976 12:00AM