HIGH PRESSURE SODIUM FOR ROADWAY LIGHTING

This paper discusses the advantages of replacing 400-watt mercury vapor lamps with 250-watt high pressure sodium lamps in a highway lighting system. The substitution provides an approximate 35% savings in energy, and an increase approximating 30% in initial horizontal lumen output, thus permitting higher mounting heights and greater spacing between light poles. This provides fewer poles, minimizing the roadside obstacles, in keeping with the present criteria for highway safety.

Media Info

  • Pagination: p. 381-384

Subject/Index Terms

Filing Info

  • Accession Number: 00178093
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Oct 12 1978 12:00AM