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.
A previous study reported on the efficiency with which various tests of color defective vision can predict performance during daylight conditions on a practical test of ability to discriminate aviation signal red, white, and green. In the current study, subgroups of the subjects used in the previous investigation were tested with the signal light g
...
Devices such as the 16PF and MMPI have been widely employed in the evaluation of personnel in aviation settings. The present study investigated the problem of item ambiguity (the degree to which an item elicits multiple interpretation) which may limit the utility of such devices when used in screening procedures.Subjects completed either the 16PF o
...
A simple, lightweight, life-support infant flotation device incorporating reliable self-righting, thermal protection and automatic self-ventilation is described This design concept utilizes prior data relative to the centers of gravity of infants and small children and exhibits excellent self righting. Thermal protection is incorporated through the
...
The study examined the interrelationships of age, aptitude measures, and training performance scores for 710 men. They ranged in age from 21 to 52 years, but less than 12 per cent were over 40. Most of the subjects were former military controllers who possessed sufficient prior ATC experience to be selected for training with an exemption from a qua
...
Airline medical departments have provided a system of preventive health maintenance for their crews that has economically effected rehabilitation of experienced crewmembers who otherwise would have lost their medical licenses and thereby their livelihood. In recognition of this fact, the FAA has proposed to designate full-time or consultant physici
...
The general objective of this analysis is to determine that there is economic place discrimination against wheat shippers located in various sections of North Dakota, Montana, South Dakota and Minnesota.
Effective stress paths for a loessial soil subject to collapse during confined compression have been determined from the results of a testing program consisting of (1) confined compression tests on natural samples of loess with initial water contents ranging from air-dry to saturation, (2) negative pore-water pressure measurements to -300 psi durin
...
Since shallow electric logging devices and gamma ray devices (for use in holes of less than 200 feet in depth) have recently been developed, it was the aim of this work to ascertain if correlation between electric logs and/or gamma ray logs and known conditions could be resolved to determine engineering parameters of the soils encountered, such as
...
This report presents an evaluation of the principal sources of noise from tracked air cushion vehicles (TACVs). The study is based on analyses of and laboratory experiments on existing TACVs and rapid transit systems. Measurements of two French TACV systems were conducted, one a 44-passenger prototype suburban vehicle propelled by a linear inductio
...
This research determined the tire-pavement friction demands of vehicles performing high-speed passing maneuvers. These frictional demands were found by photographing and analyzing passing maneuvers performed under actual highway conditions. Critical frictional requirements are proposed for application to skidding accident prevention programs that i
...
Traffic noise has recently been described as a form of environmental pollution. Society now demands that the highway engineer consider traffic noise effects for both future and existing highways. One method of reducing traffic noise to acceptable levels is to construct acoustically opaque barrier walls. The objective of this research was to review
...
Reinforced concrete inverted T-beams that support precast stringers on the flanges of the inverted T were studied in 24 load tests on 6 specimens. Results provide advice for reinforcement details and design procedures applicable to the flanges as well as the web shear strength of such beams.
The major emphasis in this report is to illustrate the distribution methods and patterns of Hard Red Spring and Durum wheat from North Dakota origins. In addition, trends in shipments by months are identified. The patterns of distribution and monthly shipments for 1969-70 are compared to previous years' data.
Designated Aviation Medical Examiners need available basic information concerning the FAA medical certification system, the philosophy which underlies standards, policy and procedures, and certain limitations of the system. It is through such information that errors adverse to safety can be forestalled and differences in opinions between equally de
...
Performance tests were carried out on a solar cosmic radiation detection instrument developed for the Concorde SST. The instrument calibration curve (log dose-rate vs instrument reading) was reasonably linear from 0.004 to 1 rem/hr for both gamma radiation and fast neutrons. Nonlinearity in the calibration curve was observed at dose rates below 0.0
...
Subjects were exposed to four simulated 'indoor' sonic booms over an approximate thirty-minute period. The overpressure levels were 1.0, 2.0 and 4.0 psf (as measured 'outdoors') with durations of 295 milliseconds. Subjects performed a two-dimensional compensatory tracking task during the exposure period and continuous recordings were obtained of he
...
A study was conducted in which performance on a non-verbal problem- solving task was correlated with the Otis Quick Scoring Mental Ability Test and the Raven Progressive Matrices Test. The problem-solving task, called 'code- lock' required the subject to determine the correct sequence in which to push five buttons in order to turn on a light. Measu
...
A previous study reported on the efficiency with which various tests of color defective vision can predict performance during daylight conditions on a practical test of ability to discriminate aviation signal red, white, and green. In the current study, subgroups of the subjects used in the previous investigation were tested with the signal light g
...
A computer program for the direct linearly elastic analysis of complex bridge bents and other highway structures has been developed and is reported herein. Rigid frames, trusses, continuous beams, and other planar structures may be analyzed using the program. The beam-column model previously reported has been modified so that loads and restraints m
...
A method for analyzing plane, curved girders is presented. The continuous girder is replaced by an assemblage of straight, prismatic elements which are chords of the original curve. Each straight element is considered as a grid type member. The entire assemblage is treated as a special case of a grid structure. Conventional matrix methods of struct
...
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
