Evaluation of a Four-year Performance Specification for Retroreflective Pavement Marking Materials PDF Download
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Author: Michael T. Stanley
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 10
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Book Description
Author: Michael T. Stanley
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 10
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Book Description
Author: Michael T. Stanley
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 10
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Book Description
Author: Michael J. Markow
Publisher: Transportation Research Board
ISBN: 0309143209
Category : Business & Economics
Languages : en
Pages : 223
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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 408: Pavement Marking Warranty Specifications presents information on the use of pavement marking warranties by United States and Canadian transportation agencies, including agency specifications. European experience is also included in the report for comparison purposes. Appendices D and E for NCHRP Synthesis 408 are available online--
Author: Neville A. Parker
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 122
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Book Description
Author: Siddharth David
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
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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.
Author: Anthony L. Andrady
Publisher: Transportation Research Board
ISBN: 9780309060646
Category : Bridges
Languages : en
Pages : 72
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Author:
Publisher:
ISBN:
Category : Automobile driving at night
Languages : en
Pages : 120
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Book Description
This report details the first year of a two-year project. During the first year the emphasis was on determining the wet-night visibility of various pavement marking systems under a variety of realistic rainfall levels. The researchers performed a literature review. They analyzed 20 years of Texas rainfall data to determine the most appropriate rainfall levels to use as design criteria for a rain tunnel. Using a low, medium, and high rainfall rate (0.28, 0.52, and 0.87 in. per hour, respectively), a 1600 ft long rain tunnel was designed and built at Texas A & M University's Riverside Campus. Experimental subjects drove through the rain tunnel and looked for pavement markings simulating skip lines. The researchers rotated pavement marking samples at different locations before each trial. The detection distance was recorded when the subject located the pavement marking sample. The data were analyzed in four main sections: waterborne paints, thermoplastics, tapes, and exotic materials. The analysis also included investigations into the wet-night visibility of rumble stripes, as well as wider lines. The measured dry and wet retroreflectivity measurements were analyzed, and the predictive capabilities of the wet retroreflectivity measurements were evaluated with respect to the wet-night detection distance of the markings.
Author:
Publisher:
ISBN:
Category : North Carolina
Languages : en
Pages : 596
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Book Description
Author: Wayne Sarasua
Publisher:
ISBN:
Category : Reflective materials
Languages : en
Pages : 100
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Book Description
