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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 31201 - 31220 of 35440 results
  • North Dakota Rail LineSegment BenefitCost Model North Dakota Rail Services Planning Study
    North Dakota Rail Line-Segment Benefit-Cost Model: North Dakota Rail Services Planning Study
    Tolliver, Denver D
    1989-11-01 | PDF
    Each year, the state of North Dakota invests substantial sums of money in the rehabilitation of light-density rail lines. The funds are either drawn from a revolving loan account maintained by the North Dakota State Highway Department (NDSHD), or consist of federal grants under the Local Rail Services Assistance Act (LRSA). In investing rail funds, ...
  • Cable Stayed Static Linear Analysis for the Captain William Moore Creek Bridge Final Report
    Cable Stayed Static Linear Analysis for the Captain William Moore Creek Bridge. Final Report
    Hulsey, J. Leroy ;
    Delaney, David K.
    1989-11-01 | PDF
    A 300-ft cable-stayed bridge, located on the highway between Skagway, Alaska and Carcross, Canada, is used to carry loaded ore trucks that weigh approximately 160,000 lbs and normal light traffic that consists of campers, buses, and automobiles. The bridge is a two-lane structure with a laminated timber deck supported by transverse floor beams span ...
  • Testing and Evaluation of Large Stone Mixes Using Marshall Mix Design Procedures
    Testing and Evaluation of Large Stone Mixes Using Marshall Mix Design Procedures
    Kandhal, Prithvi S.
    1989-11-01 | PDF
    Premature rutting of heavy duty asphalt pavements has been increasingly experienced in recent years primarily due to high pressure truck tires and increased wheel loads. Many asphalt technologists believe that the use of large size stone (maximum size of more than one inch) in the binder and base courses will minimize or eliminate the rutting of he ...
  • Bioremediation of petroleum spills in Arctic and SubArctic environments
    Bioremediation of petroleum spills in Arctic and Sub-Arctic environments
    Travis, Michael D.
    1989-11-01 | PDF
    Unaided rehabilitation of petroleum spills can affect tundra soils for up to 30 years. Effects of oil spills on Sub-Arctic forest soils last for at least a decade. Natural remediation is slow because of the cold dominated climate and short growing season. This persistence was documented in two experimental 2,000 gallon spills of crude oil on a Blac ...
  • Specification Improvements for Enhanced Constructability
    Specification Improvements for Enhanced Constructability
    Hugo, F. ;
    O'Connor, J T
    1989-11-01 | PDF
    Specific problems with highway specifications that hinder constructability are identified and analyzed. Problem frequencies are represented in cross classification tables, considering affected project element, problem type, and apparent causal factor. A process for periodically updating specifications is presented and critiqued.
  • Engineering Fabrics and Asphalt Overlay Performance
    Engineering Fabrics and Asphalt Overlay Performance
    Button, Joe W.
    1989-11-01 | PDF
    Geotextiles (engineering fabrics) were installed at four locations in Texas to evaluate their potential as cost effective measures to reduce or delay reflection cracking in asphalt concrete overlays. The overlaid pavements included asphalt concrete, continuously reinforced portland cement concrete, and a freshly cold-milled asphalt concrete. Test p ...
  • Development of Planning Values for Urban Freeways in Large Texas Cities
    Development of Planning Values for Urban Freeways in Large Texas Cities
    Walters, Carol H. ;
    Poe, Christopher
    1989-11-01 | PDF
    Using data from automatic traffic recorders (ATR) for the years 1973 to 1988 in the Texas cities of Houston, Dallas, Fort Worth, Austin, and San Antonio, this project has studied the planning parameters K and D used to determine design hour volumes. Truck percentages during peak hours have been studied using data from 24-hour manual count stations ...
  • Organization and Analysis of 1987 HMAC Field Construction Data Volume One
    Organization and Analysis of 1987 HMAC Field Construction Data: Volume One
    Tahmoressi, Maghsoud ;
    Kennedy, Thomas W.
    1989-11-01 | PDF
    This report contains the 1987 HMAC field construction data and an explanation of the methods used to organize the data into several computer files. Statistical summaries of parameters such as relative density, asphalt content, voids in mineral aggregates, and percent voids filled with asphalt are included. Gradation data plotted on a 0.45 power cur ...
  • Avoiding Early Failure of Intersection Pavements
    Avoiding Early Failure of Intersection Pavements
    Ameri-Gaznon, M ;
    Button, J. W.
    1989-11-01 | PDF
    Intersection approach pavements often experience extreme forms of distress long before the tangent segments of the same pavement and long before the design life of the pavement is attained. Field and laboratory investigations of asphalt concrete intersection approach pavements were conducted to determine ne the primary causes of premature failure a ...
  • Description and Evaluation of the South Dakota Road Profiler
    Description and Evaluation of the South Dakota Road Profiler
    Huft, David L
    1989-11-01 | PDF
    This project was conducted to describe and evaluate the South Dakota Road Profiler for Demonstration Project 72, "Evaluation of Equipment for Measuring Pavement Roughness and Rut Depth". The Road Profiler's profile and rut depth performance were evaluated by comparisons to surveys taken with rod and level and the E.W. Face "Dipstick". For each of t ...
  • An Analysis of Commuting Patterns in Texas Urban Areas Volume I
    An Analysis of Commuting Patterns in Texas Urban Areas – Volume I
    Ford, Patrice B. ;
    Lomax, Timothy J.
    1989-11-01 | PDF
    The years from 1950 to 1980 represented a period of extremely rapid growth in Texas. The trends documented in this report illustrate the impact of three main themes on the amount of commuter traffic that was handled by the roadway system in Texas metropolitan areas. The increase in suburban commuting, commuting by private automobiles and the increa ...
  • Optimum Disposal Methods for Use on the Gulf Intracoastal Waterway
    Optimum Disposal Methods for Use on the Gulf Intracoastal Waterway
    Giammona, Charles P. ;
    Hann Jr, Roy W.
    1989-11-01 | PDF
    This study develops a methodology to determine optimum disposal methods for dredging operations. It differs from previous assessment methods because it bases an optimum solution on both technical and nontechnical factors. The methodology has three components: (1) a dredged material placement assessment that considers various engineering, societal, ...
  • An Analysis of Commuting Patterns in Texas Urban Areas Volume II
    An Analysis of Commuting Patterns in Texas Urban Areas – Volume II
    Ford, Patrice B. ;
    Lomax, Timothy J.
    1989-11-01 | PDF
    The years from 1950 to 1980 represented a period of extremely rapid growth in Texas. The trends documented in this report illustrate the impact of three main themes on the amount of commuter traffic that was handled by the roadway system in Texas metropolitan areas. The increase in suburban commuting, commuting by private automobiles and the increa ...
  • Moisture Movement Under the Pavement Structure Volume II
    Moisture Movement Under the Pavement Structure. Volume II
    Rahim, Mohd Asri B Abd ;
    Picornell, Miguel
    1989-11-01 | PDF
    One of the measures being tried in Texas to stabilize the development of roughness of pavements on expansive soils is the installation of vertical moisture barriers. The purpose of the barrier is to prevent subsurface water from accessing into the crack fabric within the subgrade soils. Several sites throughout Texas have been already monitored and ...
  • Moisture Movement Under the Pavement Structure Volume I
    Moisture Movement Under the Pavement Structure. Volume I
    Rahim, Mohd Asri B Abd ;
    Picornell, Miguel
    1989-11-01 | PDF
    One of the measures being tried in Texas to stabilize the development of roughness of pavements on expansive soils is the installation of vertical moisture barriers. The purpose of the barrier is to prevent subsurface water from accessing into the crack fabric within the subgrade soils. Several sites throughout Texas have been already monitored and ...
  • Development of Gel Permeation Chromatography Infrared and Other Tests to Characterize Asphalt Cements and Correlate with Field Performance Volume I
    Development of Gel Permeation Chromatography, Infrared and Other Tests to Characterize Asphalt Cements and Correlate with Field Performance [Volume I]
    Davison, Richard R. ;
    Bullin, Jerry A.
    1989-11-01 | PDF
    Reliable analytical methods using gel permeation chromatography (GPC) and Fourier transform infrared (FT-IR) were developed to identify the changes that occur in asphalt due to oxidation, aging and solvent hardening. This represents a major breakthrough since the methods appear to accurately reflect the changes in composition and should permit the ...
  • Appendices of Development of Gel Permeation Chromatography Infrared and Other Tests to Characterize Asphalt Cements and Correlate with Field Performance Volume II
    Appendices of Development of Gel Permeation Chromatography, Infrared and Other Tests to Characterize Asphalt Cements and Correlate with Field Performance [Volume II]
    Davison, Richard R. ;
    Bullin, Jerry A.
    1989-11-01 | PDF
    Reliable analytical methods using gel permeation chromatography (GPC) and Fourier transform infrared (FT-IR) were developed to identify the changes that occur in asphalt due to oxidation, aging and solvent hardening. This represents a major breakthrough since the methods appear to accurately reflect the changes in composition and should permit the ...
  • The Development of Standard Transit Profiles for Texas
    The Development of Standard Transit Profiles for Texas
    Bullard, Diane L.
    1989-11-01 | PDF
    An extensive amount of financial and operational data on the public transit systems of Texasis presently being published by a variety of governmental agencies and industry associations.However, the manner in which much of this data is collected and published reduces its potentialusefulness to transit operators and planning agencies. In response to ...
  • The Cost and Benefits of Urban Public Transit in Texas
    The Cost and Benefits of Urban Public Transit in Texas
    Lomax, Timothy J. ;
    Memmott, Jeffery L.
    1989-11-01 | PDF
    This report summarizes data collected from the 18 urban public transit systems in Texas and other sources to describe the role of transit in each urban transportation system, and the costs and benefits associated with transit operation. Data pertaining to transit operation, ridership characteristics, transit and automobile trip patterns and the imp ...
  • Traffic Forecasting for Project Development
    Traffic Forecasting for Project Development
    Stover, Vergil G. ;
    Chang, Duk M.
    1989-11-01 | PDF
    The traditional modeling process was developed in response to the need to evaluate future transportation needs in large, rapidly growing urban areas. The process is an excellent tool for evaluation of land-use/transportation alternatives. However, it is generally recognized that such a system level must be refined for project level applications. A ...
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