SEMI-DIRECTIONAL FIXED LIGHTING FOR ONE-WAY HIGHWAYS

THIS PAPER IS A PROGRESS REPORT COVERING SEVERAL STAGES IN THE DEVELOPMENT OF SEMI-DIRECTIONAL FIXED LIGHTING AIMED TOWARD PROVIDING DRIVER VISIBILITY, COMFORT, AND SAFETY. THE SEMI-DIRECTIONAL SYSTEM PROVIDES MORE UNIFORM OBSTACLE LUMINANCE; BETTER CONTRAST BETWEEN THE OBJECT AND BACKGROUND; GOOD SUBJECTIVE PAVEMENT LUMINANCE AND UNIFORMITY; NEGLIGIBLE DISABILITY VEILING BRIGHTNESS ON BOTH THE MAIN HIGHWAY AND ADJACENT AREAS AND SERVICE ROADS; A SAFE, 30-DEGREE WIDE LATERAL FIELD OF VIEW (200 FEET AHEAD) FROM ANYWHERE ON THE DRIVING LANES; AND A MINIMUM OF DISCOMFORT GLARE WHILE OPTICAL GUIDANCE HAS BEEN MAINTAINED FOR THE DRIVER'S USE. THESE BENEFITS ARE AVAILABLE AT A LONGITUDINAL SPACING TO MOUNTING HEIGHT RATIO OF UP TO 5 TO 1 FROM AN ESTHETICALLY PLEASING LUMINAIRE. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00994480
• Supplemental Notes:
  • Vol 1, No 1, PP 14-20
• Corporate Authors:

  Illuminating Engineering Society

  120 Wall Street, 17th Floor
  New York, NY  United States  10005-4001
• Authors:
  • Franklin, J S
• Publication Date: 1971-10

Media Info

• Serial:
  • Illuminating Engineering Society, Journal of
  • Publisher: Illuminating Engineering Society
  • ISSN: 0099-4480

Subject/Index Terms

• TRT Terms: Comfort; Field of vision; Freeways; Lighting; Luminaires; One way traffic; Safety; Spacing; Street lighting; Visibility
• Uncontrolled Terms: Field of view
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00221569
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 10 1972 12:00AM