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Title: CONSTRUCTION-ZONE DELINEATION (ABRIDGMENT)
Accession Number: 00345316
Record Type: Component
Availability: Find a library where document is available Abstract: A study conducted to find the need for improving delineation in construction zones with long-term lane closures or diversions is described. The need for improved delineation was established through two means: (a) a committee of traffic, construction, design, research, and specifications engineers and (b) positive guidance, a technique that develops improvements to the highway information system from the driver's viewpoint. Once the need was established, improved delineation concepts were developed and tested in actual construction zones and evaluated for effects on traffic performance and driver visibility. The experiments showed that (a) although 12.70 x 25.40-cm (5 x 10-in) yellow high-intensity reflectors were less expensive, more easily checked, and more reliable than steady-burn lights, reflectors did not change vehicle speed averages and variances or the proportions of vehicles using the lane adjacent to the reflectors; (b) although tall vertical panels used up less space and could be seen over the tops of lead vehicles when compared with type 3 barricades, panels decreased lane encroachments and did not change vehicle mean speeds or variances; (c) raised pavement markers as a paint supplement reduced undesirable lane weaves and encroachments, day and night; (d) removable traffic tape was easy to install and easy to remove and caused no problems while in use; and (a) raised pavement markers as a paint replacement were easy to install and easy to remove, and they reduced lane weaves day and night and reduced nighttime lane encroachments. (Author)
Supplemental Notes: Publication of this paper sponsored by Committee on User Information Systems. 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 Accession #: 00362058
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Davis, Thomas DPagination: pp 15-19
Publication Date: 1981
Serial: ISBN: 0309032520
Media Type: Print
Features: Figures
(5)
; Photos
(8)
; References
(3)
; Tables
(1)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control
Files: TRIS, TRB
Created Date: Jan 29 1982 12:00AM
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