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.
The integrity of the visual and vestibular systems is important in the maintenance of orientation during flight. Although alcohol is known to affect the vestibular system through the development of a positional alcohol nystagmus, information concerning the effects of alcohol on 'vertigo' and eye-movement (nystagmus) responses to angular acceleratio
...
The effects of response sets to emphasize the appearance of stress in Composite Mood Adjective Check List (CMACL) records was investigated. Responses of 79 subjects asked to simulate stress, and 80 subjects asked to simulate stress in a subtle manner, were compared to CMACL responses obtained under normal conditions. A six-word index was developed
...
Most studies of the effects of alcohol on human performance involve static (absence of motion) situations. However, the addition of motion, involved in such activities as piloting an aircraft, might well produce impairments not usually obtained in static situations.The present study examined some of the effects of alcohol ingestion on visual tracki
...
During 1960-1963, the Civil Aeromedical Research Institute (CARI) conducted a broad spectrum of biomedical evaluations on a large number of air traffic control (ATC) students. Approximately 1270 of these students (20-50 years of age) underwent biodynamic evaluation of physical fitness.From these data, the relationships of maximum oxygen uptake (MVO
...
Three groups of subjects completed Composite Mood Adjective Check Lists (CMACL) before and after selected shifts at two air traffic control (ATC) facilities as part of a multi-discipline study of stress in ATC work.At one facility, a high traffic density tower (HDT), 22 air traffic control specialists (ATCS) were sampled before and after five eveni
...
Various physiological, biochemical, and psychophysiological measurements were made on low-time private pilots who each flew three cross-country flights. The round-trip flights were 320, 520, and 960 NM in length. Heart rate was recorded continuously throughout the flights. Urine, collected for the 24-hour period surrounding the flights, was differe
...
The placement of a point in the median vertical plane under the influence of a moving optical environment was tested in 12 subjects. It was found that the median plane was displaced in the same direction as the movement of the visual environment when the environment was moved at speeds ranging from 9 plus or minus 1 radians/minute to 45 plus or min
...
The Texas Highway Department Research Area III Pavement Design Advisory Committee functions in an advisory capacity for the research studies in the general area of pavement design. The committee anticipates and recommends research needs in this area and assists in the dissemination and implementation of the study results. This report is the list of
...
The traffic operations on the inbound Gulf Freeway were analyzed to determine if an acceptable level of service was being provided when an accident, stalled vehicle, or other similar incident occurred on the freeway. The magnitude and frequency of the congestion and delays experienced due to the occurrence of incidents were found to be significant.
...
Tests were made on portland cement and resinous concrete overlays to determine their suitability as overlays for deteriorated concrete bridge decks. Direct shear strengths of overlays bonded with epoxy, portland cement grout, and latex modified cement grout were compared with those applied with no bonding agent. Freeze-thaw tests were made to deter
...
The increase in air transportation depends not only on the technological progress and the availability of more and larger aircraft, but also on the corresponding increase in flight safety. Since, in most of the aircraft accidents, pilot error is a contributing factor, research concerning the medical and human factors must be expanded to include the
...
Forty male subjects participated in a study to examine the relationship between low-grade hypoxia and vigilance performance. At an altitude equivalent of 11,500 feet in a low-pressure chamber, subjects without supplemental oxygen did not respond differently from well-oxygenated subjects at the same altitude with respect to such physiologic measures
...
The study demonstrates that people can be motivated to utilize and, in fact, eagerly accept the use of upper torso restraint equipment for the prevention of head and chest injuries induced by flailing during crash decelerations, provided that specific design criteria are followed by structural engineers.By giving attention in this study to design o
...
The report reviews the pertinent literature and adds additional evidence indicating that the human brain may be able to tolerate head impact forces in the range of 300 to 400 g's without evidence of concussion or other detectable neurologic sequelae, provided that provisions are made to prevent deformation of the cranium.
Although air traffic controllers are often required to perform in the presence of distracting stimuli, no adequate measures of distraction susceptibility exist. In the study, 50 male subjects were tested to determine whether the interference effect produced by the Stroop color-word test (a potential measure of distraction susceptibility) might be e
...
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
...
This report gives the theoretical background and a description of a new computer program, ELASTIC MODULUS, capable of converting deflections measured by a Dynaflect on the surface of a highway pavement subgrade (two-layer elastic) system, to the elastic moduli of the pavement and subgrade. Included with the report are instructions for the use of th
...
Data are presented relating the various pavement surface characteristics, operating modes of tires, and field methods of measuring skid numbers for different pavement surfaces. Void areas were determined for 41 pavement surfaces and correlated with the reduction in skid numbers caused by an increase in speed from 20 to 60 mph. The correlation coeff
...
The theory introduced in this report is intended to identify the interdependence of factors influencing the skidding accident. The theory proposes that an analysis of accident variables can be made through the selection and quantification of the variables outlined in a Systems Model. The selection and quantification then enables corrective measures
...
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
