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 purpose of this working note is to discuss devices used to re-route cars on one track to another track (or to cross another track) such as switches, crossings, turnouts, etc. The types of hardware used for these activities are especially important for railroad classification yards, because the functions of the railroad yard are to disassemble i
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Two groups of young men (Group I, N = 51, tested identically on 2 successive days; Group II, N = 43, tested on 1 day only) performed various combinations of the six tasks of the CAMI Multiple Task Performance Battery. Two of the tasks involved the monitoring of static (lights) and dynamic (meters) processes; the four more-active tasks involved ment
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A five-test selection battery was given to select Air Traffic Controllers. Data were collected on two new tests being considered for incorporation into the battery. To determine the utility of the old and new tests, it is necessary to correlate the tests with a criterion of job success. However, since criterion information is available only on pers
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Reflective sunscreen filters are frequently bonded to vehicle windows to reduce interior heat and brightness. The present study was conducted to investigate the optical properties of and visual preformance through clear and sunscreen-treated glass panels that served as windows in an observation booth.Five combinations of external and internal brigh
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Results from the toxicological study of samples from 174 pilots killed while engaged in aerial application and samples from 2,449 other general aviation pilots are compared. The incidence of alcohol in specimens was similar for ag pilots and other general aviation pilots but the blood levels of alcohol tended to be lower in the ag pilots. Carbon mo
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Factor analyses were performed on data from 51 subjects tested on the CAMI Multiple Task Performance Battery (MTPB). Five different complex performance task combinations were used as well as the six individual MTPB tasks performed by themselves. The primary treatment of the data involved factor analyses of the tasks of the five different complex ta
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This study assessed the effectiveness of four recurrent training courses at the FAA Management Training School (MTS).The courses evaluated were Performance Improvement and Employee Appraisal (PIP/PER), Labor Relations for Management (LMR), Constructive Discipline (CD), and Managerial Effectiveness (ME). Questionnaires concerning the usefulness of c
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This study provides comprehensive data reflecting pertinent denial rates with respect to the medical and general attributes of those airmen denied medical certification in calendar years 1975 and 1976.
This report is intended to summarize the views expressed by t he participants at the 1978 CRCP Workshop. The author extends his appreciation to the participants for their significant contributions to the Workshop.
This report presents guidelines for designing bus park-and-ride facilities. Specifically, guidelines are developed for: 1) locating park-and-ride lots; 2) determining the desired size of a park-and-ride lot; 3) evaluating the capacity of selected design components of the lot (access/egress, kiss-and-ride, bus loading spaces, shelter area); and 4) e
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The behavior of a laterally loaded drilled shaft in clay has been investigated by conducting a second lateral load test on an instrumented shaft. For each increment of the applied lateral load, the shaft rotation, the soil resistance, and the lateral deflection were measured. Pneumatic pressure cells were used to measure the soil resistance along t
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The objective of this study was to assess the effects of projected truck traffic on the highway system of Texas in consideration of the social and economic vitality of the State. The study included the evaluation of the costs and benefits for a twenty-year planning horizon. Alternative scenarios of future truck traffic were assessed. The study did
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This report was prepared in catalog format for use in selecting special equipment and vehicles for transporting the elderly and the handicapped. Basic specifications, special considerations, and cost are discussed for 34 manufacturers. In addition, summaries of operational experience including a TTI survey of 120 providers of specialized elderly an
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To conduct post-construction testing and evaluation of a full-scale pavement which utilizes Sulphur extended asphalt binder. The test section is located on U.S. 69, 15 miles north of Lufkin, Texas.
The design and development of the MATT System was accomplished through task groups' approach. These task groups (one each for soil and base course, concrete, and hot mix) consisted of personnel from the Construction, Materials, Research and Development, and Data Processing Sections. Their primary function was to define user requirements with respec
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If a functional age index for pilots is to be developed that can be used as a criterion for extending or terminating an aviator's career, means for the assessment of pilot proficiency must be available or devised. There are two major approaches used today; the qualitative evaluation of performance based mainly on subjective ratings, and the quantit
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This report continues a review (see FAA-AM-76-15) of the evidence for mixed dominance of the Hbs beta gene in people with the sickle cell trait. These individuals, whose erythrocytes contain a mixture of hemoglobins (HbA/HbS), are healthy and have a normal life expectancy. They are tolerant to moderate altitudes; their erythrocytes become sickled o
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An investigation was conducted to rank the conspicuity of three paint schemes for airplane propellers and two schemes tail rotor blades previously recommended by the U.S. military and British Civil Aviation Authority. Thirty volunteer subjects with normal vision viewed rotating propellers at 6.1 m (20 ft) and tail rotor blades at 9.1 m (30 ft) unde
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