The basic functions that must be fulfilled by a high-mast lighting system are noted, and it is observed that such a well-designed system will be superior to all others with regard to energy savings. The different problems encountered in designing a high-mast lighting system for road interchanges and area lighting as opposed to straight roads are outlined. In the former, the system should facilitate the maximum use of peripheral vision, there should be uniform illumination of vertical surfaces with avoidance of silhouetting, and direct glare should be controlled as much as possible. This implies directional lighting, and not the maximum number of lumens upon all and everything. Reflected glare from a wet or shiny pavement should be avoided. Metal holide and high-pressure sodium are considered the best. Luminaires with an optical train consisting of the light sources and reflector systems are prefered. With regard to maintenance, the system which uses a carriage which climbs up the mast is favored.

  • Corporate Authors:

    Illuminating Engineering Society

    120 Wall Street, 17th Floor
    New York, NY  United States  10005-4001
  • Authors:
    • Horton, J G
  • Publication Date: 1976-12

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00147508
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 15 1977 12:00AM