ECONOMIC STUDY OF VARIOUS MOUNTING HEIGHTS FOR HIGHWAY LIGHTING

COST-EFFECTIVENESS OF VARIOUS LUMINAIRE MOUNTING HEIGHTS AND A METHOD OF EVALUATING ALTERNATE LIGHTING DESIGNS THAT WILL LEAD TO MORE ECONOMICAL HIGHWAY LIGHTING ARE EXAMINED. INITIAL AVERAGE HORIZONTAL FOOTCANDLES AND UNIFORMITY OF ILLUMINATION HAVE BEEN COMPUTED FOR ONE DIRECTION OF 2, 3 AND 4-LANE DIVIDED HIGHWAYS USING OVERHEAD MERCURY LUMINAIRES MOUNTED AT 30, 40, 45 AND 50-FT HEIGHTS. THE VARIATION OF FOOTCANDLES AND UNIFORMITY WITH DIFFERENT MOUNTING HEIGHTS AND LUMINAIRE SPACINGS ARE ILLUSTRATED. ESTIMATED INITIAL, EQUIVALENT ANNUAL CAPITAL, MAINTENANCE AND POWER COSTS PER MILE ARE PRESENTED FOR OVERHEAD AND BRIDGE RAIL LIGHTING. FLOODLIGHTING OF AN INTERCHANGE AREA WITH LUMINAIRES MOUNTED AT 100 FT HAS BEEN EVALUATED AND COSTS COMPARED TO A CONVENTIONAL SYSTEM OF HEAD LUMINAIRES MOUNTED AT 30 FT. LIGHTING DESIGNS WITH MOUNTING HEIGHTS OF 40 TO 50 FT WILL PROVIDE MORE ECONOMICAL AND EFFECTIVE LIGHTING THAN THE USUAL 30-FT HEIGHT. HIGHER MOUNTING HEIGHTS WILL NORMALLY PROVIDE FOR SAFER AND MORE AESTHETIC LIGHTING DESIGNS.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1967/179/179-001.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Night Visibility and presented at the 46th Annual Meeting. 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.
• Authors:
  • Thompson, James A
  • Fansler, Bender I
• Publication Date: 1967

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 1-15
• Monograph Title: Night visibility
• Serial:
  • Highway Research Record
  • Issue Number: 179
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Benefit cost analysis; Bridge railings; Design; Divided highways; Economic analysis; Height; Interchanges; Light; Lighting; Location; Spacing; Standardization; Street lighting
• Old TRIS Terms: Designing; Mounting; Placement
• Subject Areas: Design; Economics; Highways; Safety and Human Factors; Society;

Filing Info

• Accession Number: 00201326
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Sep 5 1994 12:00AM