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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 34321 - 34340 of 36710 results
  • Service and Methods Demonstration Program Annual Report August 1979 Executive Summary
    Service and Methods Demonstration Program Annual Report [August 1979] - Executive Summary
    Spear, Bruce D. ;
    Abkowitz, M.
    1979-08-01 | PDF
    This report contains a summary of the contents of the Service and Methods Demonstration Program Annual Report for Fiscal Year 1978. Program activities and accomplishments discussed in the Annual Report are reviewed including findings and insights from current demonstration projects, descriptions of future projects, and support activities in the are ...
  • Draft for Design Manual Chapter 5 Deciding on Flat vs Hump Yard
    Draft for Design Manual, Chapter 5: Deciding on Flat vs. Hump Yard
    Wong, Peter J
    1979-07-11 | PDF
    We address the questions of whether a flat or hump yard should be built, or perhaps more importantly, whether an existing flat yard should be rehabilitated into a hump yard. One can classify a flat yard as a labor-intensive facility, whereas a hump yard is a capital-intensive facility. For this reason, it has been traditional to build flat yards fo ...
  • 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 ...
  • Land Use Impact of Improving Section One of FarmtoMarket Road 157 in an Undeveloped Area of Arlington Texas
    Land Use Impact of Improving Section One of Farm-to-Market Road 157 in an Undeveloped Area of Arlington, Texas
    Cosby, Pamela J. ;
    Buffington, Jesse L.
    1979-07-01 | PDF
    Previous studies on the effects of highway construction upon land use have I focused mainly upon the effects of the construction of new highways. In view of a new emphasis upon upgrading and expanding existing facilities rather than building new ones, the need arises for information concerning the effects of such improvements upon land use. This re ...
  • 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 ...
  • Land Use Impact of Improving Section Two of Westheimer Road in a Developing Area in Houston Texas
    Land Use Impact of Improving Section Two of Westheimer Road in a Developing Area in Houston, Texas
    Herndon Jr, Cary W. ;
    Buffington, Jesse L.
    1979-07-01 | 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 ...
  • The Westport Connecticut Integrated Transit System Service and Methods Demonstration Program
    The Westport Connecticut Integrated Transit System: Service and Methods Demonstration Program
    Furniss, Robert E.
    1979-07-01 | PDF
    Report evaluates the implementation, operations and impacts of the Westport Transit District's demonstration grant to examine the feasibility of combining shared ride taxi service and other paratransit services with conventional bus services. Report covers the period November 1976-1979. The planned and actual project implementation is described, in ...
  • 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 Method of Field Evaluation of Narrow Bridges for Priority Indexing
    A Method of Field Evaluation of Narrow Bridges for Priority Indexing
    Newton, Thomas M.
    1979-07-01 | PDF
    This report is the first in a series dealing with establishing a Priority Index of bridges for passive treatments. Through this evaluation method a cost/benefit relationship allows effective use of available funds at narrow bridges to enable the driver to cross more safely.
  • 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 ...
  • Operational Modes for Human Services Transportation
    Operational Modes for Human Services Transportation
    Lede, Naomi W. ;
    Hill, Donald K.
    1979-07-01 | PDF
    The study was designed to examine UMTA 16 (b) (2) applications and to assess the stated needs, problems, and overall agency potential in the light of established provisions in the legislation which govern programs provided under Section 16 (b) (2) of the Urban Mass Transportation Act of 1964 as amended. Specific objectives of the study included the ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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). ...
  • 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 ...
  • 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 ...
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