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.
Traffic associated fatigue of concrete is a significant influence on the distress of the rigid pavement system. This study reports the fatigue property of concrete as well as a stress analysis of reinforced and nonreinforced sections at the AASHO Road Test. The concrete fatigue equation was developed for the prediction of the allowable number of ap
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1972-12-20
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U.S. Department of Transportation Annual Reports
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PDF
Submitted in compliance with Section 11 of the Department of Transportation Act, the sixth annual report of the Department of Transportation discusses the Department's accomplishments during Fiscal Year 1972.
A number of trends indicate that mandatory seat belt use legislation is to be expected within the near future. The constitutionality of such self-protective legislation has been the subject of recent speculation. Constitutional challenges may be expected to come in the areas of due process, equal protection, and right to privacy. Recent decisions d
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Alcohol ingestion interferes with visual control of vestibular eye movements and thereby produces significant decrements in performance at a compensatory tracking task during oscillation about the yaw axis; significant or consistent decrements in performance in the absence of motion were not obtained.The present study was designed to extend knowled
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Eight male subjects in each of three age groups (21-26, 40-45, 60-72 years) slept in pairs in the CAMI sonic boom simulation facility for 21 consecutive nights. The first five nights were used to acclimate the subjects (nights 1 and 2) and to obtain Baseline data (nights 3-5); the 12 subsequent nights (Boom) involved the hourly presentation of simu
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United States. Department of Transportation. Office of Aviation Consumer Protection
1972-12-01
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Air Travel Consumer Report Series
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ZIP
The Air Travel Consumer Report is a monthly product of the Department of Transportation's Office of Aviation Consumer Protection. The report is designed to assist consumers with information on the quality of services provided by the airlines.The .xlsx and .xls file types are Microsoft Excel files, which can be opened with Excel, and other free avai
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The purpose of the diagrammatic signing research project was to develop warrants and standards for the use of diagrammatic guide signs on controlled access highways. Volume 1 summarizes the entire diagrammatic signing research program objectives sponsored by the Federal Highway Administration. It presents the recommended warrants, standards and gui
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Research findings obtained under the project indicate that drivers require more time to read and interpret information on diagrammatic signs in comparison with conventional signs. Moreover, as the graphic component on the sign becomes more complex, driver information interpretation time increases. Accordingly, in those cases where diagrammatic sign
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The purpose of the diagrammatic signing research project was to develop warrants and standards for the use of diagrammatic guide signs on controlled access highways. Volume III of this report is published in 4 bound books-1 book for each of its 3 parts, plus 1 book containing appendixes to part 2. Part 2 contains the detailed description of a large
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Research findings obtained under the project indicate that drivers require more time to read and interpret information on diagrammatic signs in comparison with conventional signs. Moreover, as the graphic component on the sign becomes more complex, driver information interpretation time increases. Accordingly, in those cases where diagrammatic sign
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A detector was developed which maps the delaminated area of concrete on a bridge deck. It is an electronically controlled instrument which interprets acoustical signals taken from the concrete as the instrument cart rolls along the bridge. A prototype was constructed and conditioned for field service, Materials for surface treatment of concrete bri
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Laboratory and field properties of lightweight hot-mix, cold-laid maintenance mixtures are presented. Information collected indicates that conventional mixing, storage and placing operations can be utilized to prepare and place these mixtures. Adequate and prolonged skid resistance is indicated for properly designed mixtures.
Report contains a description of the work done to evaluate the capability of the urban mass transit industry to report financial and operating data through a uniform reporting system. Techniques used in the evaluation included a questionnaire survey of 191 transit systems and field studies of 43 transit systems and related organizations. The questi
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This research project was undertaken to evaluate several coating systems for concrete masonry to replace the presently used Class 2 rubbed finish. This is the report of Phase II, the field evaluation, of that project.In early October 1970, application of the five coating systems to an elevated structure in the Baton Rouge area was began. This proje
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The study involved a total of 6,367 subjects in three ATCS options. Of these, 2,000 entered FAA Academy training during 1960 to 1963, before an ATC-Aptitude Test Battery became operational in the screening of most applicants. The remaining 4,367 subjects, the majority of whom were selected from among aptitude-screened applicants, entered the Academ
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Acquiring 130 new, double-desk, self-propelled, electrically operated commuter rail cars numbered 1501 to 1630 is part of a five-year effort to improve service on the suburban lines in the South Chicago area operated by the Illinois Central Railroad. The introduction of the cars and other improvements represent one instance of attempts to upgrade s
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Hearing-threshold tests were made on flight personnel of several sorts, including aerial-application pilots, flight instructors, private pilots, stewardesses, and FAA flight inspectors. Excluding those people whose flight experience is of short duration, each group shows some measurable degree of threshold shift, although this shift is frequently n
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Four techniques applicable to a field survey for detecting areas of poor-quality concrete in concrete bridge decks were investigated and compared. Comparisons were also made between the measurements obtained using these four techniques and laboratory determinations of the compressive strength of cores taken from each bridge deck. It was concluded t
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The Louisiana Department of Highways has adopted new designs for the Standard Plans for the RCB 22X catch basin to replace the old standard cast iron grate with either a welded bar steel grate or an alternate riveted steel reticuline grate. This revision was brought about by a request from the manufacturers for a new design of the cast iron grate b
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