From 1970 to the end of 1973, 2187 new high-intensity sodium street lights were added and 18,500 existing luminaires were converted to high-pressure sodium in areas of Washington, D. C., where high rates of nighttime crime occurred. The total project cost was approxmately 210,000 dollars. The urban renewal areas where the lights were installed were primarily major business arterials. The benefits were outstanding. Overall nighttime crime incidents in four test areas dropped approximately 50 percent in 24 months. Also, business in the areas relighted indicated large numbers of shoppers and increased sales activity. An additional benefit was the increase in lumen output by 5000,000,000, while at the same time energy consumption was reduced by 222,000 kilowatt hours.

  • Corporate Authors:

    Illuminating Engineering Society

    120 Wall Street, 17th Floor
    New York, NY  United States  10005-4001
  • Authors:
    • Basaran, S
  • Publication Date: 0

Media Info

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Filing Info

  • Accession Number: 00095306
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 29 1975 12:00AM