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 purpose of this study was to modify, as required, the previously established relationships between the VHTRC skid trailer, the VHTRC stopping distance car, and the first VDHT skid trailer, and to develop appropriate relationships with the above three devices for the second, recently acquired VDHT trailer. Regression equations indicating the rel
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This report is a summary, based primarily on a literature review, of the energy-savings potential of the elements in the transportation planning process and systems management. Within the scope of long-range planning, the energy aspects of land use and mode of transportation were investigated, whereas for the short range the energy potential of the
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This report reviews the policy of the Virginia Department of Highways and Transportation toward energy conservation in the operation of its buildings and recommends further measures for conserving energy. The major conclusions are 1. The established policy within the Department is to conserve energy whenever possible, and top level administrators s
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A digital data acquisition system has been designed to meet the need for a long duration noise analysis capability. By sampling the DC outputs from sound level meters, it has been possible to make twenty-four hour or longer recordings, in contrast to the one-hour recordings possible on seven-inch analog tape reels. The system is made up of a digita
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The National Highway Traffic Safety Administration requires each state to file an Annual Highway Safety Work Program as a prerequisite for obtaining federal section 402 safety monies. However, the work program serves as more than a mechanism for obtaining funds; it induces planning, programming, and budgeting of highway safety projects. The Commonw
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This report describes the results of the application in Virginia of the trip generation procedures described in the Federal Highway Administration report entitled Trip Generation Analysis and published in 1975. Cross classification models, disaggregate regression models, aggregate regression models, and trip rates were developed for three cities. T
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This report explains the methods and equipment used to produce fluorescent, impregnated, polished, ultrathin sections of portland cement concrete. These sections are used in the study of the microstructure of concrete and are examined with a microscope which combines the features of a petrographic microscope with those of a microscope having incide
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Right turn on red (RTOR) maneuvers have been permitted at signalized intersections in Virginia since 1972. However, until January 1, 1977, following a study requested by the General Assembly, the maneuver was restricted to intersections at which a sign was posted to inform the motorist that RTOR was permitted. Under the pre-1977 legislation RTOR wa
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Metal truss bridges are uniquely indigenous products of American engineering and construction technology, and in recent years their historic significance has been increasingly recognized along with that of other early engineering structures. Some trusses that warrant inclusion on the National Register of Historic Places require renovation or replac
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The basic issue concerning mopeds is whether they should be considered as being bicycles - and, basically, be free of regulation, or as motorcycles - and thus be subject to all regulations applicable to motor vehicles. In an effort to resolve this issue, European accident data, Virginia crash data, the laws of the several states, the position taken
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During nine days in June 1977, four major metropolitan areas of the state of Virginia were surveyed to determine seat belt use by summer urban travelers. Observer-data collectors were stationed at selected signalized intersections. Motorists in the lane adjacent to the curb were shown a clipboard bearing the question, Are you wearing seat belts? Th
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The public opinion questionnaire used in this study was designed to provide the Department information regarding public involvement procedures as viewed by the public, as well as to provide insight into citizen opinion regarding the specifics of the projects on which it was tested. It was found to serve both functions very well. The study has provi
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The application of a procedural method for planning express bus-fringe parking transit to determine why the Greenwood Drive service in Portsmouth, Virginia, failed to attract more riders than it did is described. The analysis of the study area revealed that many of the conditions which have been shown to prevail where the majority of successful exp
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Based on laboratory flume tests, it was concluded that waste cellophane could be used effectively for trapping and filtering waterborne sediment. It was also priced competitively and, like straw and burlap, it was found to be biodegradable in a soil environment and to give off no known toxic or other deleterious effects.
Since the Arab oil embargo of 1973 the number of fatal traffic accidents and fatalities in Virginia has been relatively stable from year to year. However, in September 1977 fatalities began to occur at an alarming rate and by the end of 1977, the total number of traffic fatalities had increased dramatically from that which occurred in 1976. In an e
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The report gives four cogent arguments for the Department's being exempted from the requirement to file environmental impact statements on state-funded projects.
This report is intended to acquaint personnel involved in the design, inspection, and maintenance of civil transport oxygen systems with the human respiratory requirements and oxygen system design considerations necessary to effect an interface and provide acceptable high-altitude life support. Simplified explanations and language that should be un
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This report is a collection of various studies, conducted over 15 years, of flotation and survival equipment used or proposed for aviation application, including developmental and prototype designs. Results of these studies were presented at scientific meetings and/or published in preprints or proceedings with limited distribution. Information obta
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Data are presented from 210 trials to compare movement up and down spiral and straight-segmented stairways simulating the stairs in multideck transport aircraft, up and down spiral and straight-segmented industrial-type stairways, fore and aft through a passageway enclosed on one side, and fore and aft through a passageway enclosed on both sides. T
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The investigator studied the effects of ethanol on the spontaneous activity of single neurons in functionally differentiated subnuclei of a posterior thalamic visual projection area, nucleus rotundus, in the anesthetized pigeon. Low doses of ethanol, 0.05 - 0.10 ml/kg (producing blood levels of about 0.005 - 0.010%) , inhibited activity in anterior
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