The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
The National Coalition for Aviation Education represents industry and labor, united to promoteaviation education activities and resources; increase public understanding of the importance of aviation; and support educational initiatives at the local, state and national levels.
The 1993 TRAFFIC CRASH FACTS AND STATISTICS is a report published by the Bureau of Highway Safety and Traffic Engineering of the Pennsylvania Department of Transportation. This publication is a statistical review of reportable motor vehicle traffic crashes in the Commonwealth of Pennsylvania for the calendar year 1993. The figures are compiled from
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United States. Environmental Protection Agency. Office of Mobile Sources
1993-01-01
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The document provides technical guidance to the states that are interested in allowing credits generated in their clean fuel vehicle fleet program or similar state-originated program to be used for emission credit trading. State-originated programs to grant these credits may be substantially different than the federal fleet program. EPA believes th
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University of South Florida. Center for Urban Transportation Research
1993-01-01
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This report examines the role of the comprehensive plan in developing an accessmanagement program, aspects of current regulatory practice that contribute toaccess problems, and regulatory techniques that support access managementprinciples. Communities should establish a policy framework that supportsaccess management in the local comprehensive pla
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Federal and Virginia laws restrict the width of commercial vehicles traveling on interstate and federal-aid highways to 102 inches (8'6") without a special permit. Virginia regulations generally allow the issuance of special permits for loads up to 14 feet in width. Loads greater than 14 feet may be shipped only in exceptional circumstances. In add
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The Virginia Department of Transportation is deeply committed to the development and implementation of an efficient, cost-effective maintenance management system for its bridges. Much effort is being applied towards the development of a management system that will ensure that appropriate maintenance takes place at the optimum times. Within such sys
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The I-64 Hampton Roads Bridge-Tunnel spans the James River estuary and the lower Chesapeake Bay between the cities of Hampton and Norfolk. Two large wave-built spits, Willoughby Spit and Old Point Comfort, extend into the harbor beyond, the tunnels. This study examines the marine life inhabiting the Hampton Roads tunnel islands approximately 10 yea
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A smart bridge is one that senses some significant condition of its environment or behavior and then automatically reacts to that condition. This report presents an overview of the subject, describing how emerging technologies are making it possible for bridges to be smart in a variety of ways. Special attention is paid to sensors, materials, and c
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Virginia's first installation of epoxy-coated reinforcing steel, which was opened to traffic in 1977, was evaluated during construction and through 13 years of service. It was apparent at the time of construction that the integrity of the coating application did not meet the requirements of the specifications There were many flaws and holidays in t
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In 1980, the Virginia Transportation Research Council developed a procedure to test silt fence installations (VTM-51). The test determines the filtering efficiency (amount of soil removed) and the flow rate of a geotextile. A known concentration and volume of sediment-laden water is timed as it passes through a geotextile sample. In 1988, ASTM Comm
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Because of increased traffic loads and truck tire pressures over the last few years, the rutting of asphalt pavements has worsened. Additives such as polymers are being used in an attempt to improve the performance of these pavements. One such product is Novophalt, which is the registered trademark of an asphalt modified with 4 to 6 percent of a po
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