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Evaluation Of Pavement Markings For Improved Visibility During Wet Night Conditions

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Evaluation Of Pavement Markings For Improved Visibility During Wet Night Conditions

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Author : Benjamin H. Cottrell
language : en
Publisher:
Release Date : 1996

Evaluation Of Pavement Markings For Improved Visibility During Wet Night Conditions written by Benjamin H. Cottrell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Automobile driving in rain categories.

This study evaluated the night visibility of waffle tape and paint with large beads, particularly during wet night conditions. Data were collected at two sites along a primary arterial. The evaluation included an examination of (1) the application of the markings, (2) the visibility of the markings using retroreflectometer measurements and subjective assessments, and (3) the costeffectiveness of the markings. The study revealed: (1) compared with paint with standard beads, the waffle tape and paint with large beads were slightly more retroreflective during light rain at night and recovered quicker after flooding out, (2) the marginal improvement in visibility during periods of light rain do not offset the operational problems of applying paint with large beads, and (3) the benefits of waffle tape during light rain do not appear to justify its use solely for wet night visibility. Because of the above findings, snowplowable raised pavement markers, which are very visible in wet night conditions, appear to be more cost-effective. The study recommends that (1) VDOT continue to use and maimain snowplowable raised pavement markers for visibility during wet night conditions, (2) VDOT continue to monitor FHWA's study on all weather pavement markings, and (3) the Suffolk District consider testing nonsnowplowable raised pavement markers to assess their use as a low-cost alternative to improve visibility during wet night conditions where snowplowing occurs infrequently.

Evaluation Of Wet Weather Pavement Markings

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Author :
language : en
Publisher:
Release Date : 2005

Evaluation Of Wet Weather Pavement Markings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Automobile driving at night categories.

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.

Wet Night Visibility Of Pavement Markings

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Author : Ronald Bruce Gibbons
language : en
Publisher:
Release Date : 2004

Wet Night Visibility Of Pavement Markings written by Ronald Bruce Gibbons and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Automobile driving in rain categories.

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.

Evaluation Of The Performance Of Permanent Pavement Markings And Retro Reflectors In Snowplowable Raised Pavement Markers

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Author : Neville A. Parker
language : en
Publisher:
Release Date : 2002

Evaluation Of The Performance Of Permanent Pavement Markings And Retro Reflectors In Snowplowable Raised Pavement Markers written by Neville A. Parker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Reflectors (Safety devices) categories.

Department Of Transportation And Related Agencies Appropriations For 1975

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Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
language : en
Publisher:
Release Date : 1974

Department Of Transportation And Related Agencies Appropriations For 1975 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.

Department Of Transportation And Related Agencies Appropriations For Fiscal Year 1976

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Author : United States. Congress. Senate. Committee on Appropriations
language : en
Publisher:
Release Date : 1975

Department Of Transportation And Related Agencies Appropriations For Fiscal Year 1976 written by United States. Congress. Senate. Committee on Appropriations and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.

Research And Technology Program 1996 2000

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Author : United States. Federal Highway Administration
language : en
Publisher:
Release Date : 1996

Research And Technology Program 1996 2000 written by United States. Federal Highway Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Highway research categories.

Department Of Transportation And Related Agencies Appropriations For 1997

Department Of Transportation And Related Agencies Appropriations For 1997 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with United States categories.

R D Highway Safety Transportation System Studies

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Author : United States. Federal Highway Administration
language : en
Publisher:
Release Date : 1973

R D Highway Safety Transportation System Studies written by United States. Federal Highway Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Highway research categories.

Department Of Transportation And Related Agencies Appropriations For 2003

Department Of Transportation And Related Agencies Appropriations For 2003 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with United States categories.

Evaluation Of Pavement Markings For Improved Visibility During Wet Night Conditions

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