Download or read book Federally Coordinated Program of Research and Development in Highway Transportation Improved highway design and operation for safety written by and published by . This book was released on 1973 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Federally Coordinated Program of Research and Development in Highway Transportation written by and published by . This book was released on 1980 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Safety Evaluation of Permanent Raised Pavement Markers written by Geni Brafman Bahar and published by Transportation Research Board. This book was released on 2004 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Download or read book Evaluation of Construction zone Pavement Marking Materials written by Kenneth R. Agent and published by . This book was released on 1987 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Evaluation of Pavement Marking Materials for Wet Night Conditions Final Report written by L. Ellis King and published by . This book was released on 1989 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improved highway design and operation for safety written by United States. Federal Highway Administration and published by . This book was released on 1973 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Evaluation of Selected Delineation Treatments on Two lane Rural Highways written by and published by . This book was released on 1977 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research project were to establish relationships between traffic performance and accident probability on two-lane rural highways; to develop an experimental design for field testing the effectiveness of conventional and novel delineation treatments; to evaluate the effect of selected delineation treatments on traffic performance and associated accident probability; and to make recommendations for the design and use of delineation treatments.
Download or read book Highway Transportation Research and Development Studies written by United States. Federal Highway Administration and published by . This book was released on 1971 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book R D Highway Safety Transportation System Studies written by United States. Federal Highway Administration and published by . This book was released on 1973 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Evaluation of Raised Snowplowable Pavement Markers Final Report written by G. F. Gurney and published by . This book was released on 1980 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Public Roads written by and published by . This book was released on 1992 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Evaluation of Snowplowable Marker Installations written by Kenneth R. Agent and published by . This book was released on 1986 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Raised Pavement Markers written by Jerry G. Pigman and published by . This book was released on 1975 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Survey of Current Research and Development on Roads and Road Transport written by International Road Federation and published by . This book was released on 1983 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
