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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.

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Showing 33121 - 33140 of 35440 results
  • An Empirical Relationship between Mesoscale Carbon Monoxide Concentrations and Vehicular Emission Rates Final Report
    An Empirical Relationship between Mesoscale Carbon Monoxide Concentrations and Vehicular Emission Rates: Final Report
    Clemeña, Gerardo G.
    1979-07-01 | PDF
    Presented is a relatively simple empirical equation that reasonably approximates the relationship between mesoscale carbon monoxide (CO) concentrations, areal vehicular CO emission rates, and the meteorological factors of wind speed and mixing height. The approximation is an extension of rollback modeling and was derived from aerometric data measur ...
  • Performance evaluation of Louisianas AASHO satellite test sections final report
    Performance evaluation of Louisiana's AASHO satellite test sections : final report.
    Temple, William H.
    1979-07-01 | PDF
    It is beyond the scope of this study to attempt to isolate the effect of individual design assumptions on pavement life.A performance evaluation (to determine present serviceability, end of life, etc.) of selected Portland Cement Concrete (P.C.C.) and hot mixed asphaltic concrete (H.M.A.C.) pavements would seem to be a more straightforward means of ...
  • The effects of elevated highway construction on water quality in Louisiana wetlands interim report No 1
    The effects of elevated highway construction on water quality in Louisiana wetlands : interim report No. 1.
    Cramer, George H. ;
    Hopkins, William C.
    1979-07-01 | PDF
    This study is to determined by physical, chemical, and biological means, the effects of bridged highway construction techniques on water quality in wetlands. Water quality was monitored before, during, and after construction. The data shows the increase in pollution that occurred during construction. The areas where construction has been completed ...
  • Performance standards for passfail determinations in the national air traffic flight service station training program
    Performance standards for pass-fail determinations in the national air traffic flight service station training program.
    Pickrel, Evan W.
    1979-07-01 | PDF
    This report describes and documents Pass-Fail procedures for the new FSS Training Program. New types of measures and sets of norms are used to create standards of performance that students must meet to become eligible for acceptance into the operational facility work force. One type is newly developed FSS Skills Tests, paper-and-pencil simulations ...
  • A Further Discussion of UPs Proposed Yermo Yard
    A Further Discussion of UP’s Proposed Yermo Yard
    Stock, William A
    1979-06-20 | PDF
    Union Pacific has developed an unusual and innovative design for a yard that eliminates the use of a master retarder, with all control being concentrated in the group retarders. UP has tested this design extensively with SRI’s PROFILE software, and it appears to perform satisfactorily. Additionally, the design was tested extensively on WABCO’s prog ...
  • Visit with ASEA Representatives
    Visit with ASEA Representatives
    SRI International
    1979-06-19 | PDF
    The purpose of ASEA’s trip to the Southern Pacific Railroad was to introduce ASEA’s classification yard equipment to the railroad. ASEA’s equipment consists of: Hydraulic retarders used in a quasi-continuous control design, and Cable wagon-hauling system for classification tracks. The cable wagon-hauling system is used primarily in yards with conve ...
  • Performance of OpenGraded Friction Courses
    Performance of Open-Graded Friction Courses
    Britton, S. C. ;
    Gallaway, B. M.
    1979-06-01 | PDF
    Significant research findings have been made to assist in the placement of adequate open-graded asphalt friction courses (OGAFC) with full confidence on a routine basis. Recommendations are made indicating where improvements can be made in raw materials specification requirements, mix design methods, and construction procedures which should promote ...
  • Land Use Impact of Improving Section One of Westheimer Road in a Developing Area in Houston Texas
    Land Use Impact of Improving Section One of Westheimer Road in a Developing Area in Houston, Texas
    Herndon Jr, Cary W. ;
    Buffington, Jesse L.
    1979-06-01 | PDF
    The majority of previous land use impact studies have been devoted to investigating the effects that new highway construction has on land use change and development. In view of the new emphasis placed upon upgrading and redesigning existing facilities rather than building new ones, highway planners need information relative to the influence that ex ...
  • Development of Preliminary Congestion Indices for Urban Freeways in Texas
    Development of Preliminary Congestion Indices for Urban Freeways in Texas
    Holder, Ronald W. ;
    Christiansen, Dennis L.
    1979-06-01 | PDF
    Traffic congestion on urban freeways in Texas is a growing concern; freeways in each of the five largest cities in Texas experience some degree of congestion every weekday, yet no quantitative measure of freeway congestion has been developed. This report documents the results of an effort to develop a preliminary freeway congestion index. Elements ...
  • Preliminary Evaluation of Applicable Priority Treatment Techniques on Existing Urban Freeways in Texas
    Preliminary Evaluation of Applicable Priority Treatment Techniques on Existing Urban Freeways in Texas
    Holder, Ronald W. ;
    Christiansen, Dennis L.
    1979-06-01 | PDF
    Congestion is increasing significantly on Texas urban freeways. One means of increasing roadway capacity is to provide preferential treatment for high occupancy vehicles (HOV). This report documents the preliminary screening of five alternative priority treatment techniques that could be applied to 26 urban freeways in Texas. The improvements that ...
  • Transit Station Renovation A Case Study of Planning and Design Procedures
    Transit Station Renovation: A Case Study of Planning and Design Procedures
    Griffiths, John R. ;
    Hoel, Lester A.
    1979-06-01 | PDF
    The general techniques and procedures for planning and evaluating transit interface facilities are applied comprehensively to the problem of station renovation. The 69th Street Terminal in Philadelphia is evaluated in terms of its performance in accomplishing its transportation function, its effectiveness in relation to transportation policies, dev ...
  • Investigation of accident reduction by grooved concrete pavement final report
    Investigation of accident reduction by grooved concrete pavement : final report.
    Walters, William C.
    1979-06-01 | PDF
    This report is a category 2 experimental project evaluation written in conjunction with EHS-I-10-3(93)158 and EHS-I-12-1(44)0 contracted to groove hardened PCC pavement. In it the wear characteristics, pavement texture, skid resistance, and the accident reduction are discussed, plus the experience Louisiana had with the sawing of the grooves in its ...
  • Interstimulus interval as it affects temporary threshold shift in serial presentations of loud tones
    Interstimulus interval as it affects temporary threshold shift in serial presentations of loud tones.
    Tobias, Jerry V.
    1979-06-01 | PDF
    Temporary threshold shifts were measured repeatedly during a session in order to determine effects of interstimulus interval (ISI) on the shift. The fatiguing sound was a 3-minute, 110-dB-SPL, 4,000-Hz tone. Immediately following the 3-minute stimulation, Bekesy-audiometric tracings were made for 3 minutes at 5,656 Hz. Then the subject sat quietly ...
  • Evaluation of seating restraint systems conducted during fiscal year 1978
    Evaluation of seating restraint systems conducted during fiscal year 1978.
    Chandler, Richard F. ;
    Trout, Edwin M.
    1979-06-01 | PDF
    This report summarizes the results of test programs conducted by the Protection and Survival Laboratory to investigate the performance of prototype or operational seating and restraint systems relative to their ability to provide protection against crash injury and to validate the performance of the FAA Seat Occupant Model: Light Aircraft (SOMLA). ...
  • Westbound Trim End Alternatives at Elkhart Yard
    Westbound Trim End Alternatives at Elkhart Yard
    Sakasita, Masami
    1979-05-24 | PDF
    This working note describes the three proposed alternative trim-end designs of Elkhart yard, which will be examined using the newly developed computer simulation model CONFLICT. It presents a pros and cons discussion of the three alternatives but does not present any quantitative results.
  • Aeromedical Evacuation Worldwide Aeromedical Evacuation
    Aeromedical Evacuation: Worldwide Aeromedical Evacuation
    United States. Army
    1979-05-10 | PDF
    This regulation establishes operational and administrative responsibilities and procedures for worldwide aeromedical evacuation. It implements STANAG 3204, SOLOG 83, SEASTAG 3204, and IADB (Inter-American Defense Board) Resolution 46 by incorporating standardized aeromedical evacuation terminology and procedures which under terms of the above cited ...
  • Annual Report of the Maritime Administration 1978 MARAD 1978
    Annual Report of the Maritime Administration 1978 [MARAD 1978]
    United States. Maritime Administration
    1979-05-01 | Annual Reports of the Maritime Administration | PDF
    Annual report of the Maritime Administration for fiscal year 1978. The report describes in detail the Agency's activities to promote and strengthen the American merchant marine.
  • The Effects of Soil Binder and Moisture on Blackbase Mixtures
    The Effects of Soil Binder and Moisture on Blackbase Mixtures
    Ping, Wei-Chou Virgil ;
    Kennedy,Thomas W
    1979-05-01 | PDF
    This report describes a study which was undertaken to evaluate the effect of the amount of soil binder on the engineering properties of asphalt-treated paving materials. For this study soil binder was considered to be aggregate finer than U. S. standard sieve size No. 40. The static and repeated-load indirect tensile tests were used to measure engi ...
  • Truck Utilization of the I45N Contraflow Lane in Houstona Feasibility Study
    Truck Utilization of the I-45N Contraflow Lane in Houston–a Feasibility Study
    Holder, R. W. ;
    Christiansen, Dennis L.
    1979-05-01 | PDF
    This report was to document the gathering of truck movement data on the North Freeway (I-45N) in Houston, Texas, primarily to determine the potential for trucks to use the proposed North Freeway contraflow lane. However, the final result of the study was the compilation of detailed traffic flow data concerning all traffic using the North Freeway. T ...
  • Development of electrophysiological indices of neurological toxicity for organophosphate pesticides and depressant drugs
    Development of electrophysiological indices of neurological toxicity for organophosphate pesticides and depressant drugs.
    Revzin, A.M.
    1979-05-01 | PDF
    Accurate control of eye movements and rapid detection of unexpected events in the periphery of the visual field are critically important in the aviation environment. We have studied the effects of certain drugs and environmental pollutants on brain mechanisms controlling these visual reflexes, using single nerve cell recordings in animal model syst ...
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