ROADWAY DELINEATION WITH CURB MARKER LIGHTS
A SECTION OF WINDING ROAD FREQUENTLY ENSHROUDED IN FOG NEAR OAKLAND, CALIFORNIA, WAS DELINEATED WITH MARKER LIGHTS. SEVERAL FEATURES OF THE LIGHTING UNITS RECEIVED SPECIAL ATTENTION IN ADDITION TO THE PHOTOMETRIC CONSIDERATIONS: (1) THE DESIGN WAS TO BE TAMPERPROOF, (2) THE UNITS WERE TO PRESENT A MINIMUM CROSS-SECTION ABOVE THE MOUNTING SURFACE SO THAT PEDESTRIANS WOULD NOT TRIP OR SLIP ON THE STRUCTURES, (3) MAINTENANCE SHOULD BE SIMPLE AND NOT OFTEN REQUIRED, AND (4) COSTS SHOULD BE KEPT TO A MINIMUM. THE UNITS ARE MOUNTED ON THE TOP OF THE CONCRETE CURB ALONG EACH SIDE OF THE TWO-LANE SECTION. THE SPACING IS UNIFORM AT 30 FT BETWEEN UNITS, EXCEPT AT THE INTERSECTIONS WHERE GAPS ARE LEFT IN THE LINEAL PATTERNS. THE DESIGN AND ELECTRICAL SERVICE ARE DISCUSSED.
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Supplemental Notes:
- 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.
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Authors:
- FINCH, D M
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Conference:
- 41st Annual Meeting of the Highway Research Board
- Location: Washington DC, United States
- Date: 1962-1-8 to 1962-1-12
- Publication Date: 1962
Media Info
- Media Type: Digital/other
- Features: Figures; Photos; References;
- Pagination: pp 105-109
- Monograph Title: Night visibility 1962
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Serial:
- Highway Research Board Bulletin
- Issue Number: 336
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Curbs; Fog; Highway delineators; Highway design; Light; Spacing; Visibility
- Old TRIS Terms: Delineators (Traffic); Highway delineation
- Subject Areas: Highways; Safety and Human Factors;
Filing Info
- Accession Number: 00220126
- Record Type: Publication
- Files: TRIS, TRB, ATRI
- Created Date: Aug 5 1994 12:00AM