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.
Between 1960-1963, a large number of ATC students in training at the FAA Aeronautical Center in Oklahoma City underwent a broad spectrum of biomedical evaluations conducted by the Civil Aeromedical Research Institute (CARI). Approximately 1,270 of these students were evaluated for physical fitness. Included in this evaluation were measurements of h
...
It was reported in 1966 that the prevalence of fatal aircraft accidents among physician pilots during 1964 and 1965 was four times that of general aviation pilots. There was a marked drop in the total number of fatal accidents among physician pilots during the years 1966, 1967, 1968 but an increase in 1969 and further increase in 1970. Among all ge
...
The Engineering Research Institute at Iowa State University studied the organization and procedures for highway planning by all levels of government and the coordination among various state agencies and local governments in Iowa. Study information was derived from interviews, questionnaires, and a review of the literature. Representatives from stat
...
The design and management of pavements rely on an imperfect technology. One of the most efficient means for continuous improvement of the design and management process lies in the development of comprehensive and systematic information systems. This report describes the planning and initial development of a pavement feedback data system as a part o
...
Although the sensory systems (vestibular and visual) most involved in disorientation and 'pilot's vertigo' would appear to be affected by the ingestion of alcohol, the locus and nature of the effect are not established. For example, there are apparently conflicting data concerning the effects of alcohol on vestibular responses to caloric irrigation
...
Problems involved in obtaining the desired thickness of bridge decks were investigated. The study, which was limited to decks which were longitudinally screeded during construction, included (1) field measurements of the girder deflections during construction, and (2) a theoretical frame analysis of the girder deflections under the field loading co
...
The primary objectives of this study were (1) to determine the state of the art of procedures for the investigation and evaluation of the community and environmental impact of investments in highway facilities, (2) to develop in detail those investigative and evaluative procedures for use by the Virginia Department of Highways, and (3) to establish
...
An evaluation of the stress ranges in two typical highway bridge spans under service loadings was made in a cooperative study by the Virginia Highway Research Council and the Federal Highway Administration. The strains at selected points on the superstructure elements of the spans were recorded continuously for periods of four and five days under n
...
The statistically oriented specification for bituminous concrete production reviewed in this report was used as a basis for acceptance of more than one million tons of bituminous concrete in 1970. Data obtained from this system were analyzed for gradation and asphalt content for such comparisons as how well the production average matched the stated
...
The design of secondary and subdivision roads in Virginia is based on the design charts recommended by the Highway Department. In view of recently gained knowledge of materials and design techniques, the Pavement Research Advisory Committee requested that a new design procedure for these roads be developed. In the proposed design developed, the soi
...
A program of construction and the performance evaluation of three major Virginia experimental flexible pavements is reported. The objective of the program was to evaluate the performance of pavements incorporating new or timely design concepts and to assess the feasibility of these concepts for further use. Among the major findings of the study are
...
The project designated "Concrete Durability Studies" comprises case studies of unusual durability, either in kind or extent. These case studies are directed toward situations in which appearances suggest materials or construction rather than structural causes. Included in this project as Case Study #3 is an occurrence of severe scaling and pattern
...
Concrete strength test results from three prestressing plants utilizing steam curing were evaluated statistically in terms of the concrete as received and the effectiveness of the plants' steaming procedures. Control charts were prepared to show trends in the data, the batch-to-batch variability of the strengths for both the 28-day moist cured and
...
A study was made on 17 bridge decks constructed in 1963 under regular construction procedures. The purpose was (1) to compare important properties of concrete as freshly placed in randomly selected bridge decks with those after hardening of the concrete, (2) to detect the influence, if any, of different screeding methods, and (3) to relate the perf
...
Evaluations of pavement soil subgrades for the purpose of design are mostly based on empirical methods such as the CBR, California soil resistance method, etc. The need for the application of theory and the evaluation of subgrade strength in terms of the modulus of elasticity in place of empirical methods is essential for rational design techniques
...
Accident reports, field evaluations, state police and highway engineer questionnaire replies, and other data sources were used to conduct a general study of accidents involving highway bridges in Virginia. The bridges included in the study were divided into three groups. These were: (a) Arterial and primary system bridges, (b) interstate system bri
...
The final report summarizes the results of a study of the use of epoxy compounds in the shallow surface repair and sealing of concrete bridge decks. The research effort concentrated on the use of epoxy resin systems as bonded overlays and included evaluations of test strips of seven materials on two structures in Northern Virginia, supplemented by
...
One of the most comprehensive programs for the evaluation and definition of the performance of concrete in bridge decks was that undertaken cooperatively by the Portland Cement Association, the Bureau of Public Roads, and eight states distributed throughout the United States. Detailed studies of a few bridges were made in four states and surveys we
...
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.
United States Department of Transportation
