TEST OF 400-W HIGH-PRESSURE SODIUM VAPOR LIGHTING (ABRIDGEMENT)

Several test groups of 400-W high-pressure sodium vapor lights were subjected to a 10 hour on, 2-hour off continuous cycle for two years to test the relatibility of manuacturers-supplied lamps mortality data. In general, the average life expectancy of these lamps was for below the 24000 hours advertised for them. While the test data is applicable only for lamps manufactured in later 1971 and early 1972, it is the author's opinion that it justifies considerable skepticism toward manufacturer-supplied data and that users should develop and implement contractual mechanism for enforcing performance specifications in regard to the advertised life of the lamp.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1979/737/737-014.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=TEST+OF+400-W+HIGH-PRESSURE+SODIUM+VAPOR+LIGHTING+(ABRIDGEMENT)&author=M.+Belangie&publication_year=1979
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Visibility. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Belangie, Michael C
• Publication Date: 1979

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 91-93
• Monograph Title: TRAFFIC CONTROL DEVICES, GEOMETRICS, VISIBILITY, AND ROUTE GUIDANCE
• Serial:
  • Transportation Research Record
  • Issue Number: 737
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Manufacturing; Pressure; Reliability; Service life; Sodium vapor lamps
• Uncontrolled Terms: Data; High pressure
• Old TRIS Terms: Sodium lamps
• Subject Areas: Design; Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00315074
• Record Type: Publication
• ISBN: 0309029929
• Report/Paper Numbers: HS-029 511
• Files: TRIS, TRB
• Created Date: Oct 8 1980 12:00AM