Federally Coordinated Program of Research and Development in Highway Transportation: Improved highway design and operation for safety PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 476
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 476
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Book Description
Author: Geni Brafman Bahar
Publisher: Transportation Research Board
ISBN: 0309087902
Category : Reflectors (Safety devices)
Languages : en
Pages : 71
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Book Description
"TRB's National Cooperative Highway Research Program (NCHRP) Report 518: Safety Evaluation of Permanent Raised Pavement Markers examines the safety performance of snowplowable permanent raised pavement markers on two-lane roadways and four-lane freeways"--Publisher's description.
Author: United States. Federal Highway Administration. Offices of Research and Development
Publisher:
ISBN:
Category :
Languages : en
Pages : 540
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Book Description
Author:
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 512
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Book Description
Author: Kenneth R. Agent
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 30
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Book Description
The objectives of this study were to evaluate available foil-back and removable tapes as well as construction-zone raised pavement markers and to recommend materials that should be included on approved lists for use by the Kentucky Department of Highways. Tapes and markers were placed on transverse test sections and the reflectivity, durability, and appearance were observed. Tapes to be included on the approved lists for foil-back and removable tapes were recommended. Tapes manufactured by 3M, Flex-O-Lite, Cataphote, and Swarolite were included on the list of acceptable foil-back tapes. Recommended removable tapes were the 3M and Cataphote removable tapes. Stimsonite 66 and Flex-O-Lite construction-zone markers were included on the approved list for construction-zone raised pavement markers. More specific guidelines were developed to use in future evaluations of construction-zone preformed tape and markers.
Author: L. Ellis King
Publisher:
ISBN:
Category :
Languages : en
Pages : 188
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Book Description
Author: United States. Federal Highway Administration
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 434
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Book Description
Author: United States. Federal Highway Administration
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 958
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Book Description
Author: United States. Federal Highway Administration
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 492
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Book Description
Author: Ronald Bruce Gibbons
Publisher:
ISBN:
Category : Automobile driving in rain
Languages : en
Pages : 24
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Book Description
This executive summary describes an investigation into the performance of pavement markings in wet night conditions. The performance of a typical pavement marking will degrade when it gets wet. This is a result of the flooding of the marking optics, thereby reducing retroreflectivity. Several technologies are available to improve wet marking performance. In this project, six technologies were tested using both standard measurement methods and participant evaluations. The results show that two of the marking technologies, raised retroreflective markers and wet retroreflective tape, outperformed the group under all conditions. These markings were also highly accepted by the participants. The results also show that the standard paint and glass beads technology is the worst performing and the least desirable of those evaluated. A comparison of the ASTM retroreflectivity measurement methods and the measured luminance results also indicates that the methods are suitable for the conditions used in the evaluation; however, possible additions and corrections to the methods are outlined in this report. A follow-up study is underway to allow development of a performance-based specification for pavement markings for wet night visibility.
