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 report documents an applications manual for evaluating various diamond interchange design alternatives and their traffic operations using TRANSYT-7F. TRANSYT-7F is a macroscopic simulation model developed primarily for optimizing network-wide signal systems to reduce delays, stops, and fuel consumption. The manual could assist the tra
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This is the second in a series of reports documenting a research program aimed at detailed investigation of a new type of post-tensioned bridge structure that has a moderately thick concrete slab resting directly on columns without bent caps. In this program two scaled laboratory models, named Model 1 and Model 2, are tested along with instrumentat
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This is the third in a series of reports documenting a research program aimed at detailed investigation of bridge structures with moderately thick slabs resting directly on columns without bent caps. Post-tensioning is employed in the longitudinal and transverse directions. Longitudinal post-tensioning is uniformly distributed across the width of t
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In 1990, the NMSHTD initiated an ambitious and long-term research project. The project was to define the process for and undertake the development of a statewide multimodal transportation forecasting model. The project commenced in April, 1991. The first activity was an intensive two-day knowledge-sharing and brainstorming session. A research proce
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United States. Department of Transportation. Federal Aviation Administration
1992-02-01
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This was the first strategic plan for the Office of Aviation Medicine (AAM). The AAM is a geographically and functionally diverse organization that provides a wide range of aviation medical services to the FAA and the national and international aviation industry. The plan was developed at the request of the Federal Air Surgeon and is based on an ev
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This report presents the results of the survey of 54 railroad grade crossings in South Dakota. Three basic types of crossings were studied: rubber, asphalt, and timber. The crossings were studied for the effect on roughness of highway and rail traffic, soil conditions, drainage, and age. Construction of five crossings was also observed, in order to
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This report presents the results of the survey of 54 railroad grade crossings in South Dakota. Three basic types of crossings were studied: rubber, asphalt, and timber. The crossings were studied for the effect on roughness of highway and rail traffic, soil conditions, drainage, and age. Construction of five crossings was also observed, in order to
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United States. Department of Transportation. Federal Aviation Administration
1992-01-01
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PDF
This brief booklet on reducing runway incursions gives information on how runway incursions happen, what you can do to prevent them from happening, the magnitude of the problem, and more.
Vision based mobile robot guidance has proven difficult for classical machine vision methods because of the diversity and real time constraints inherent in the task. This thesis describes a connectionist system called ALVINN (Autonomous Land Vehicle In a Neural Network) that overcomes these difficulties. ALVINN learns to guide mobile robots using t
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Today, via networked computer workstations, air traffic controllers easily access data on traffic and flying conditions over, into, and out of the U.S. air space using the Enhanced Traffic Management System (ETMS). Developed by the Volpe National Transportation Systems Center for the U.S. Federal Aviation Administration (FAA), the ETMS compiles rea
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Beginning on April 1, 1988, a revision to Virginia law gave police officers the authority to require an individual suspected of drug-related driving under the influence (DUI) to submit a blood sample to be tested for drugs. Concurrent with the implementation of the revised law, Virginia initiated a pilot Drug Recognition Technician (DRT) Program, w
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The primary objective of this research was to examine the avoidance of weigh stations in Virginia by overweight trucks. Secondary objectives were (1) to determine the magnitude of overweight truck activity on selected routes and (2) to compare traffic loading data collected using static scales with enforcement with data collected using weigh-in-mot
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The final report is in the form of a manual of practice for the VDOT to use in planning its stormwater management strategies. The manual was proposed to aid in the selection and design of erosion control practices and stormwater control practices for transportation projects in Virginia. Information obtained from Virginia, other states, and the lite
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This report was prepared in response to a request from the Transportation Safety Administration of the Virginia Department ofMotor Vehicles for data concerning the use of safety belts and child safety seats by the occupants of vehicles bearing Virginia license plates. In an effort to track changes in safety belt use as a result of various statutory
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In April of 1987, Congress passed the Surface Transportation and Uniform Relocation Assistance Act (STURAA), which permitted states to raise their maximum speed limit on rural interstate highways (rural interstates) to 65 mph. Virginia's 65 mph speed limit went into effect July 1, 1988, for passenger vehicles and on July 1, 1989, for commercial bus
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The report describes the Virginia Department of Transportations' first modern experience with the construction of thin-bonded Portland cement concrete overlays of existing concrete pavements and with the fast track mode of rigid paving. The study was conducted in cooperation with the Federal Highway Administration (FHWA) and used a paving mixture v
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This first report describes the results of a field study of the live load responses of a segmentally constructed prestressed concrete cable-stayed bridge. The main span of the test structure consists of twin box girders connected by delta frames. Known vehicular loadings were placed statically at various points along the bridge. Strains measured du
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The Traffic Monitoring Guide (TMG) provides a method for the development of a statistically based procedure to monitor traffic characteristics such as traffic loadings. Truck weight data in particular are a major element of the pavement management process because there is a strong relationship between pavement deterioration and truck weights. Becau
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A study of the KJ. Law Model 8300 Roughness Surveyor was begun in 1985 to determine the feasibility of replacing Mays Meter roughness testing equipment with an easier to use and more repeatable alternative. The original schedule called for completion of the study in late 1986. However, the study was badly delayed because of equipment failures, long
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