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.
This research was conducted to develop a cost-effectiveness model for guardrail selection that includes cost parameters for eleven (11) guardrail configurations and criteria for analysis of system effectiveness under various dynamic impact conditions. Vehicle classes include 2250-lb (1021-kg) and 4500-lb (2041-kg) vehicles. Accident severities were
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Investigation of derailments have revealed two shortcomings of existing three-piece trucks: poor tracking on curves and hunting on tangent track. Design and installation requirements were developed for an innovative primary suspension radial truck. An initial design incorporated an Ackermann linkage for positive steering of wheelsets. Prototype tru
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1980-01-01
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U.S. Department of Transportation Annual Reports
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PDF
Submitted in compliance of Section 11 of the Department of Transportation Act, the twelfth annual report of the Department of Transportation accounts the Department's activities during Fiscal Year 1978.
Work began on a complete rehabilitation project on Interstate 20 in Roscoe, Texas in July of 1977. 2.9 miles of the project was selected for recycling. Research report 527-1, "Recycling Asphaltic Concrete Pavement," (also published as FHWA-DP-39-11) presents the history of the selected section, construction procedures, mix plant operations, air qua
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This report presents an evaluation of the need for "intermediate" range priority treatments for high-occupancy vehicles on the Katy Freeway (I-10) in Houston, Texas. Short range HOV treatments are evaluated in other reports. This study evaluates priority treatment needs from the central business district to State Highway 6.
The objectives of this study were: (1) to evaluate two or more commercial blast cleaning systems, which could be used in a maintenance program of cleaning and painting existing steel highway bridges; and (2) to determine if the systems have significant potential to reduce pollution at a reasonable cost. The first step in completing these objectives
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This project was undertaken for the Virginia Department of Transportation Safety to assess the feasibility of implementing the Data Analysis and Reporting Techniques (DART) computer software system in Virginia. Following a review of available literature, discussion of system implementation and use with federal and state personnel, and a survey of 2
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In August 1978, bituminous surface treatments in which vulcanized rubber was blended with the asphalt cement were placed on two secondary roads by the Sahuaro Petroleum and Asphalt Company and the Whitehurst Paving Company. The work was jointly financed by the Federal Highway Administration and the Virginia Department of Highways and Transportation
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This study was designed to evaluate, on interstate roadways in Virginia, the use of a technique developed in California for estimating or determining incidences of wrong-way driving at off-ramps. Also, information gained from a survey of the available literature on the subject was compiled. Based on data obtained from selected off-ramps in Virginia
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This report on kinetic bridges is essentially a state-of-the-art study on two types of bridges whose location or physical characteristics are designed to be time dependent. The first type, called a "relocatable bridge", is essentially for use as a temporary structure that must be erected quickly. Many recent examples of this type are described, ran
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The Virginia Department of Highways and Transportation conducts underwater inspection, maintenance, and salvage activities as part of its routine operations. These activities are carried out by divers from the private sector working on a contract basis and Department employees trained in the use of SCUBA. This manual expresses the Department's atti
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Federal regulations prompted as a result of bridge failures require the rating of bridge structures for which federal funds will be utilized for rehabilitation and replacement. The large number of bridges in Virginia subject to being rated makes such a task time consuming and difficult to fulfill if manual procedures are to be used. Consequently, a
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This report presents an analysis of the potential energy and money savings to be achieved from the increased use of class 7, diesel-powered, 4-yard dump trucks by the Department. The technical differences between diesel and gasoline power plants are reviewed. The findings of a literature search are presented along with the results of a survey condu
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Reduced visibility on the highway due to darkness and adverse weather conditions results in an inability of motorists to readily observe pavement markings. Because raised pavement markers provide increased pavement and roadway delineation, the feasibility of using them has been investigated by the Research Council and the results are summarized in
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