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.
Various new work zone traffic control devices are currently being used or considered for use in work zones throughout the State of Texas. The impact performance of plastic drum, sign and flashing unit assemblies was evaluated in this study, with particular interest on the effect of the weight of the ballast and the performance of the devices under
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A field study of the Texas Brown Pelican population and the behavior of the Brown Pelican population in the vicinity of the P100 Bridge between Port Isabel and South Padre Island, Texas was prompted by increasing traffic mortality of the endangered birds. The findings of the field studies, supplemented with wind tunnel studies of the airflow around
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Despite the increased interest in performance indicators for large transit systems, there has not been an equal effort at establishing similar techniques for small and rural systems. In response to this problem, this project developed a methodology to evaluate the relative performance of the Section 18 operators. It was found that the agencies coul
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Oregon State Highway Division, Materials and Research Section
1990-10-01
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After five years and approximately 725,000 18-kip equivalent axle loads, all pavements have resisted rutting, maintained a smooth ride, and retained high skid resistances. The only significant distress on any sections are cracking and ravelling.In summary, the Plus Ride with Pave Bond (Southbound Lane), Arm-R-shield, Fiber Pave, Boni Fibers, Class
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The study objective was to see if microsilica concrete (MC) is a viable alternative to the latex modified concrete (LMC) usually used on bridge deck overlays in Oregon. The study addresses MC overlays placed in 1989 on Portland cement concrete (PCC) bridge decks at three sites.At each site the first MC pours had the most problems,as the contractors
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This report presents a review of the literature, a survey of current practices regarding policies used to foster economic development through intercity highway improvements and the identification of current analytical techniques for assessing the economic development impacts of highways. The review contains extensive documentation of economic devel
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This document is reference material for personnel using the Data Link and Analysis System (DATAS) for hardware diagnostic testing. Included in this document is a brief overall description of the DATAS, and a thorough description of how to operate the hardware diagnostic tests. This is one of a series of technical notes published on the DATAS. This
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This document is reference material for personnel using the National Airspace System (NAS) (HOST or ARTS IIIA) Air Traffic Control (ATC) Interface Subsystem. It was originally developed to be part of the Data Link Test and Analysis System (DATAS) in order to provide an interface between the NAS and the Ground Data Link Processor (GDLP).
This report was prepared for the International Trade Administration of the U.S. Department of Commerce (DOC). It examines the economics of Airbus Industre (AI) civil transport programs and the potential effects of AI's presence on both the market for civil transport aircraft and on competing U.S. firms. One of the primary reasons for conducting thi
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United States. Congress. Office of Technology Assessment
1990-09-01
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Among the several major issues that Congress addressed in the process of reauthorizing the Clean Air Act was the future role of alternative highway transportation fuels in reducing urban smog. As vehicular emissions control efficiencies rose past 90 percent, attention turned to the idea that some alternatives to gasoline have combustion and/or othe
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Following the passage of the Bus Regulatory Reform Act of 1982 (BRRA), intercity carriers used their increased regulatory flexibility to discontinue many underutilized rural and small city services. This was understandable, in light of the competitive pressures resulting from the loss of cross-subsidies from charter and tour operations, and the der
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Four 270 contoured moving barrier impact tests were conducted for research and development in support of the crash III damage algorithm reformulation. These tests were conducted on a 1985 Ford Escort 3-door hatchback, VIN 1FABP3 293FW300080 , at the Transportation Research Center of Ohio.
Transit providers must regularly collect ridership data not only for planning purposes but also to maintain federal funding. Traditionally, ridership data has been collected using paper and pencil and then coded into a database manually. The extensive amounts of data that this task can generate, and the possibility of coding errors, represents an o
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Most multipath assignment techniques are generated based on either path enumeration or path diversion. Path enumeration models primarily reiterate the assignment procedure with variable link impedance inputs. Burrell's algorithm is a typical path enumeration model in which the link impedances are assumed to be randomly distributed to account for er
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This report documents a review of the travel impacts of six urban freeway reconstruction projects throughout the United States and analysis of the travel impacts of five projects in Texas. The review includes projects in Chicago, Pittsburgh, Boston, Seattle, Detroit, and Milwaukee. The five projects in Texas include I-35 in Austin, US-75 in Plano,
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The Texas State Department of Highways and Public Transportation is exploring methods of providing additional roadway capacity for major traffic movements. One method identified is to increase the capacity of the arterial street system. Streets with the potential of serving an enhanced role could be improved to operate at high speeds and a high lev
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A test of the IMS - Swedish Laser road tester was conducted in September 1988. The vehicle mounted laser equipment was used to survey pavement conditions on sections of Oregon's Interstate and non-interstate highway system.The IMS laser equipment performed in the manner expected, but deficiencies were noted in groundpoint/mile marker location recor
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In May of 1981 the Oregon State Highway Division was asked by the Federal Highway Administration to participate in a long term deck deterioration study. The study, an extension of an earlier study was finalized in 1979, was to run through 1990. Review of the data in 1987 made it apparent that further study would not produce any more meaningful info
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