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Nighttime Visibility Of Raised Pavement Markers And Wet Pavement Markings Under Service Conditions
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Book Synopsis Wet Night Visibility of Pavement Markings by : Ronald Bruce Gibbons
Download or read book Wet Night Visibility of Pavement Markings written by Ronald Bruce Gibbons and published by . This book was released on 2004 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Traffic Stripe Removal written by and published by . This book was released on 1980 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Marking Visibility Requirements During Wet Night Conditions by : Ronald Bruce Gibbons
Download or read book Pavement Marking Visibility Requirements During Wet Night Conditions written by Ronald Bruce Gibbons and published by . This book was released on 2006 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigated the performance of pavement markings in wet night conditions. Typically, performance will decrease in wet conditions. The degradation is a result of flooding of the marking optics and a change in the optical media, thereby reducing retroreflectivity and the visibility distance. Several technologies are available to improve the visibility of markings under wet conditions. This study used four technologies and evaluated them in a dynamic situation. In the experiment, vehicles were driven by older participants and visibility was measured based on the detection distances of the beginning or ending of a continuous edge marking. The results indicate that a specifically designed wet retroreflective tape performed better than the currently used paint and glass bead technology. Paint with large glass beads and profiled thermoplastics also showed an improvement over the standard paint and glass bead technology. A relationship between retroreflectivity and the detection distance was found, which was used to postulate a minimum required value for visibility during wet night conditions. A value of 200 mcd/m2/lx appears to provide a reasonable detection distance for a minimum performance requirement.
Book Synopsis Long-term Pavement Marking Practices by : James Migletz
Download or read book Long-term Pavement Marking Practices written by James Migletz and published by Transportation Research Board. This book was released on 2002 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 306: Long-Term Pavement Marking Practices documents the current and best practices for managing pavement marking systems, identifies future needs, and addresses driver needs and methods of communicating information to drivers, selection criteria (e.g., reflectivity, pavement service life, wet weather performance), materials (e.g., color, durability, cost), specifications, construction practices, inventory management systems, and more.
Download or read book Public Roads written by and published by . This book was released on 1975 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Uniform Vehicle Code and Model Traffic Ordinance by : National Committee on Uniform Traffic Laws and Ordinances
Download or read book Uniform Vehicle Code and Model Traffic Ordinance written by National Committee on Uniform Traffic Laws and Ordinances and published by . This book was released on 1987 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traffic Control Devices Handbook by :
Download or read book Traffic Control Devices Handbook written by and published by . This book was released on 1983 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guidelines for implementing the standards and applications contained in the Manual on Uniform Traffic Control Devices.
Book Synopsis 108-2: Senate Report No. 108-265, Vol. 2, * by :
Download or read book 108-2: Senate Report No. 108-265, Vol. 2, * written by and published by . This book was released on 2004 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traffic Control Devices Handbook 2001 by : James L. Pline
Download or read book Traffic Control Devices Handbook 2001 written by James L. Pline and published by . This book was released on 2001 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Federal Highway Administration. Offices of Research and Development Publisher : ISBN 13 : Total Pages :540 pages Book Rating :4.3/5 (91 download)
Book Synopsis Report No. FHWA-RD. by : United States. Federal Highway Administration. Offices of Research and Development
Download or read book Report No. FHWA-RD. written by United States. Federal Highway Administration. Offices of Research and Development and published by . This book was released on 1978 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traffic Control Devices, Visibility, and Rail-highway Grade Crossings by :
Download or read book Traffic Control Devices, Visibility, and Rail-highway Grade Crossings written by and published by . This book was released on 1998 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Wet-weather Pavement Markings by :
Download or read book Evaluation of Wet-weather Pavement Markings written by and published by . This book was released on 2005 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Maintenance of the Highway Infrastructure by : National Research Council (U.S.). Transportation Research Board
Download or read book Maintenance of the Highway Infrastructure written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 1994 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Association of State Highway and Transportation Officials. Task Force for Roadside Safety Publisher : ISBN 13 : Total Pages :560 pages Book Rating :4.0/5 ( download)
Book Synopsis Roadside Design Guide by : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
Download or read book Roadside Design Guide written by American Association of State Highway and Transportation Officials. Task Force for Roadside Safety and published by . This book was released on 1989 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 2004 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement Marking Warranty Specifications by : Michael J. Markow
Download or read book Pavement Marking Warranty Specifications written by Michael J. Markow and published by Transportation Research Board. This book was released on 2010 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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--
Book Synopsis Characterization of Road-edge Markings in Support of Road-departure Prevention Systems by :
Download or read book Characterization of Road-edge Markings in Support of Road-departure Prevention Systems written by and published by . This book was released on 1995 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
