TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

ECONOMIC STUDY OF VARIOUS MOUNTING HEIGHTS FOR HIGHWAY LIGHTING

Accession Number:

00201326

Record Type:

Component

Abstract:

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.

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.

Monograph Title:

Night visibility

Monograph Accession #:

01486560

Authors:

Thompson, James A
Fansler, Bender I

Pagination:

pp 1-15

Publication Date:

1967

Serial:

Highway Research Record

Issue Number: 179
Publisher: Highway Research Board

Media Type:

Digital/other

Features:

Appendices (2) ; Figures (7) ; References (13) ; Tables (10)

Old TRIS Terms:

Subject Areas:

Design; Economics; Highways; Safety and Human Factors; Society

Files:

TRIS, TRB

Created Date:

Sep 5 1994 12:00AM

More Articles from this Serial Issue: