Improved Visibility

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Evaluation Of Pavement Markings For Improved Visibility During Wet Night Conditions

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.

Surface Mine Truck Safety

Surface Mine Truck Safety written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Strip mining categories.

Information Circular

Information Circular written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Mines and mineral resources categories.

The Economics And Management Of Water And Drainage In Agriculture

The Economics And Management Of Water And Drainage In Agriculture written by Ariel Dinar and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.

Jan van Schilfgaarde, USDA Agricultural Research Service and National Research Council Committee on Irrigation-Induced Water Quality Problems In 1982, a startling discovery was made. Many waterbirds in Kesterson National Wildlife Refuge were dying or suffering reproductive failure. Located in the San Joaquin Valley (Valley) of California, the Kesterson Reservoir (Kesterson) was used to store agricultural drainage water and it was soon determined that the probable cause of the damage to wildlife was high concen trations of selenium, derived from the water and water organisms in the reservoir. This discovery drastically changed numerous aspects of water management in California, and especially affected irrigated agriculture. In fact, the repercussions spilled over to much of the Western United States. For a century, water development for irrigation has been a religiously pursued means for economic development of the West. The primary objective of the Reclamation Act of 1902 was, purportedly, the development ofirrigation water to support family farms which, in turn, would enhance the regional economy (Worster, 1985).

Wright Area Coal Lease Applications

Wright Area Coal Lease Applications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

Availability Of Critical Scrap Metals Containing Chromium In The United States

Availability Of Critical Scrap Metals Containing Chromium In The United States written by LeRoy R. Curwick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.

Aging America And Transportation

Aging America And Transportation written by Joseph F. Coughlin and has been published by Springer Publishing Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-20 with Health & Fitness categories.

Recommended."--CHOICE: Current Reviews for Academic Libraries Coughlin and D'Ambrosio's edited volume is a welcome contribution to highlighting this issue for gerontologists. The collection is an informative and useful reference for students, researchers, practitioners, planners, and policy analysts"--The Gerontologist This solution-focused volume fills a gap in the literature by addressing the key issues around mobility and transportation for the aging Baby Boomer generation--issues that will be significantly different than those of previous generations of older adults. This new generation, many of whom will continue to work past the traditional retirement age and expect to pursue an active lifestyle, may have to confront new transportation technology, the need to use public transportation, and ways to continue driving safely as their eyesight fades and reaction time slows down. This volume examines many of the issues faced by policymakers, transportation officials, vehicle manufacturers, health and human services professionals, and aging adults themselves as the largest generation prepares to enter late adulthood. The volume's editors are both at the MIT AgeLab, whose multi-disciplinary team designs, develops and deploys innovations to enhance quality of life for aging populations. Through the contributions of a diverse group of theorists and practitioners, including recommendations from the National Older Driver Safety Advisory Council, a collaboration between AARP's Driver Safety Program and the MIT AgeLab, the book discusses several key topics pertinent to Aging America and transportation. Among them are the changing demographics of the population, how this generation's lifestyle choices affect mobility, technology trends in private vehicles, changes in the infrastructure and transportation system, the "new" older driver, and issues of safety and education among older drivers. This book also explores practical solutions and strategies, such as new transportation options and innovations that will significantly impact the future of mobility for older adults, for keeping these seniors active and mobile well into their later years. Key Features: uol Focuses on the unique mobility needs of the aging Baby Boomer generation Provides practical solutions and strategies for policy changes to enhance the mobility of older adults Examines issues faced by policymakers, transportation officials, vehicle manufacturers, health and human services professionals, and aging adults Discusses strategies for updating the infrastructure and transportation system, driving safety education for older drivers, and trends in private vehicle innovations

Improved Work Zone Design Guidelines And Enhanced Model Of Travel Delays In Work Zones

Improved Work Zone Design Guidelines And Enhanced Model Of Travel Delays In Work Zones written by Helmut T. Zwahlen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Traffic congestion categories.

The project focuses on two major issues - the improvement of current work zone design practices and an analysis of vehicle interarrival time (IAT) and speed distributions for the development of a digital computer simulation model for queues and travel delays in work zones. Important considerations in the development of work zone design guidelines include guidance, delineation, and the safety of workers and drivers. A nationwide survey of current work zone best practices was conducted. Based on the review of the existing ODOT guidelines, superior practices available in other states, relevant research, and professional judgment of personnel involved in work zone activities, a set of guidelines for work zone design are proposed. It is anticipated that these research findings will result in the better design of work zones which will minimize traffic delays and improve safety. In the second part of the project trailers, each using two Wavetronix microwave radar units in side-fire mode, were developed to nonintrusively measure traffic. The traffic was measured at six work zones sites with different types of lane configurations at different freeways in Ohio. Traffic on the road was also independently measured using video and radar, and the results compared to records from the trailers to verify that the trailers were measuring the traffic with reasonable accuracy. IAT data of successive vehicles in freeflowing traffic ahead of work zones were analyzed and IAT distributions were generated as a function of the traffic volume for each lane and relationships between traffic volumes and cumulative IAT distributions were established allowing a direct conversion from hourly traffic counts to corresponding cumulative IAT distributions. This conversion method produces fairly accurate cumulative IAT distributions for selected hourly traffic volumes. It was also found that the same cumulative IAT distribution can be used to model the free-flowing traffic at other freeway locations in Ohio, which means that the IAT distributions are portable and scalable and a microscopic digital computer simulation model based on queueing theory may be developed to investigate traffic delays in work zones.

Motor Age

Motor Age written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1939 with Automobile industry and trade categories.

Railway Age

Railway Age written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1934 with Railroads categories.