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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 30921 - 30940 of 35438 results
  • Suggested Procedures for Evaluating the Effectiveness of Freeway HOV Facilities
    Suggested Procedures for Evaluating the Effectiveness of Freeway HOV Facilities
    Turnbull, KF ;
    Henk, RH
    1991-02-01 | PDF
    This report presents the results of the state-of-the-art review of evaluation practices used with different high-occupancy vehicle (HOV) lane projects in North America. Based on this review, suggested procedures are outlined for conducting before-and-after evaluations of freeway HOV facilities and ongoing monitoring activities. Evaluation studies o ...
  • Research Notes Construction and First Years Performance of Polymer Modified OpenGraded Asphalt Concrete Test Sections
    Research Notes: Construction and First Year’s Performance of Polymer Modified Open-Graded Asphalt Concrete Test Sections
    Oregon State Highway Division, Materials and Research Section
    1991-02-01 | PDF
    In recent years, open-graded friction courses (OGFC) of hot mxi asphalt concrete have been widely used by the Oregon State Highway Division (OSHD). Typically, conventional asphalt cement is used as a OGFC binder. However, in Oregon, several binders are available that use asphalt modified by the addition of polymers. To see if these binders increase ...
  • Building A Safer And More Effective Air Traffic Control System Policy Study
    Building A Safer And More Effective Air Traffic Control System, Policy Study
    Poole, Robert W.
    1991-02-01 | PDF
    The U.S. air traffic control (ATC) system is failing to keep pace with the needs of commercial aviation. Airline traffic has increased by 68% since deregulation. But the workforce is one-third smaller in relation to traffic levels than before the 1981 controllers' strike, and the computers, radars, and other equipment are generally outdated and unr ...
  • Preliminary Analysis of CNWs Nebraska Rail Line Volume II
    Preliminary Analysis of CNW’s Nebraska Rail Line Volume II
    Tolliver, Denver D
    1991-02-01 | PDF
    This report focuses on three primary aspects or categories of highway cost: 1. transportation agency costs ("build-sooner" costs), 2. net resource costs (which affect the broader society), 3. highway user costs.
  • Wirtgen Remixer surface recycling US 90 Jennings LA construction report
    Wirtgen Remixer surface recycling U.S. 90 Jennings, LA. : construction report.
    Doucet, Roland J. ;
    Paul, Harold R.
    1991-02-01 | PDF
    This report documents the surface recycling of 7.4 miles of route U.S. 90 from the junction of La 99 to Jennings, Louisiana. The specialized recycling equipment was provided and operated by Remixer Contracting Co., Inc. of Austin, Texas. Roadway production included heating the existing pavement, milling to a 1.5 inch depth, adding rejuvenator and n ...
  • Experimental project use of shredded tires for lightweight fill
    Experimental project : use of shredded tires for lightweight fill.
    Read, John ;
    Dodson, Tim
    1991-02-01 | PDF
    Shredded rubber tires have been used as lightweight fill in repair of a landslide that occurred under a highway embankment in mountainous terrain on Highway US 42 (Oregon State route #35). The force driving the slide was decreased by removing the soil embankment and replacing it with a lighter weight embankment constructed with shredded tire chips. ...
  • Saint Louis region small sample travel survey
    Saint Louis region : small sample travel survey
    Barton-Aschman Associates
    1991-02-01 | PDF
    This report summarizes results of the St. Louis Region SmallSample Travel Survey. A total of 1,446 households participated in thesurvey, which was designed to collect travel characteristics data fromresidents of the St. Louis metropolitan region. The survey updatesthe 1965-66 Origin-Destination home-interview data.The primary use of the data will b ...
  • Waste tire and shingle scrapbituminous paving test sections on the Munger Recreational Trail Gateway segment interim report
    Waste tire and shingle scrap/bituminous paving test sections on the Munger Recreational Trail Gateway segment. interim report
    Turgeon, Curtis M.
    1991-02-01 | PDF
    The need to reduce Minnesota's dependence on land fills resulted in a unique cooperative venture by three state agencies. A partnership was forged between the Minnesota Pollution Control Agency (MPCA), the Minnesota Department of Natural Resources (DNR) and the Minnesota Department of Transportation (Mn/DOT) to investigate the use of recycled tire ...
  • Texas Traffic Signal Detector Manual
    Texas Traffic Signal Detector Manual
    Woods, Donald L.
    1991-02-01 | PDF
    A guide to the design and installation of detectors for long life and high reliability. This report contains many suggestions for more rapidly installing loop detectors. It reports on the testing of several innovative loop designs and addresses the special needs of bicycles, MOPED and motorcycles. Special emphasis is given to detector sealants, hig ...
  • Aesthetically Pleasing Concrete Combination PedestrianTraffic Bridge Rail Texas Type C411
    Aesthetically Pleasing Concrete Combination Pedestrian-Traffic Bridge Rail – Texas Type C411
    Hirsch, T. J. ;
    Buth, C. E.
    1991-02-01 | PDF
    Research has developed railings to withstand impact loads from vehicles of ever-increasing size; however, aesthetic considerations have been overshadowed by safety and structural requirements. The objective of this research study was to develop aesthetically pleasing, structurally sound railings that can serve as alternative railings in city or urb ...
  • Corridor Analysis for Reconstruction Activities Traffic Control Strategies and Incident Management Techniques
    Corridor Analysis for Reconstruction Activities, Traffic Control Strategies, and Incident Management Techniques
    Chang, Edmond C. P.
    1991-02-01 | PDF
    This study is to develop a microcomputer knowledge-based Expert System for assisting urban freeway corridor incident management. Study activities include; literature review, conceptual design, prototype system development, and program documentation. Efforts were made to summarize the information and decision-making processes involved in implementin ...
  • Corridor Analysis for Reconstruction Activities Traffic Control Strategies and Incident Management Techniques Microcomputer Users Guide
    Corridor Analysis for Reconstruction Activities, Traffic Control Strategies, and Incident Management Techniques: Microcomputer User’s Guide
    Chang, Edmond C. P. ;
    Huarng, Kunhuang
    1991-02-01 | PDF
    This study is to develop a microcomputer knowledge-based Expert System for assisting urban freeway corridor incident management. Study activities include: literature review, conceptual design, prototype system development, and program documentation. Efforts were made to summarize the information and decision-making processes involved in implementin ...
  • Identifying and Correcting RutSusceptible Asphalt Mixtures
    Identifying and Correcting Rut-Susceptible Asphalt Mixtures
    Perdomo, Dario ;
    Button, Joe W.
    1991-02-01 | PDF
    A field evaluation of Texas highway pavements was conducted to provide evidence that sand-size aggregate particles have a significant influence on rutting. A laboratory investigation was performed in order to (1) quantify the influence on resistance to rutting when rounded, smooth, sand-sized aggregate particles are replaced by rough, angular, poro ...
  • Data Link Test and Analysis SystemTCAS Monitor Users Guide
    Data Link Test and Analysis System/TCAS Monitor User's Guide
    Van Dongen, John ;
    Wapelhorst, Leo
    1991-02-01 | PDF
    This document is a user's guide for the Data Link Test and Analysis System (DATAS) Traffic Alert and Collision Avoidance System (TCAS) monitor application. It provides a brief overall hardware description of DATAS configured as a TCAS Monitor, and an application software user's guide. It is assumed that users are familiar with the message fields of ...
  • Coordination of Transportation Planning and Land Use Control A Challenge for Virginia in the 21st Century Final Report
    Coordination of Transportation Planning and Land Use Control: A Challenge for Virginia in the 21st Century: Final Report
    Vander Lugt, Robert D ;
    Virkar, Salil R
    1991-01-01 | PDF
    The public power to control the use of land is primarily exercised by city and county officials in Virginia. Control over the location and characteristics of transportation facilities, including roads and mass transit, is exercised primarily by the Commonwealth through the Virginia Department of Transportation. Unlike most other states, Virginia re ...
  • Research Notes Cold InPlace Recycling CIR
    Research Notes: Cold In-Place Recycling (CIR)
    Oregon State Highway Division, Materials and Research Section
    1991-01-01 | PDF
    In 1986, the joint research effort between the Oregon State Highway Division (OSHD) and Oregon State University (OSU) resulted in a recommended CIR mix design procedure for asphalt concrete pavements. Recent research focused on verifying and/or modifying this mix design procedure. A research study was conducted based on projects constructed during ...
  • Design of Large Stone Asphalt Mixes for LowVolume Roads Using SixInch Diameter Marshall Specimens
    Design of Large Stone Asphalt Mixes for Low-Volume Roads Using Six-Inch Diameter Marshall Specimens
    Kandhal, P.S.
    1991-01-01 | PDF
    Premature rutting of road pavements constructed for hauling coal and logs is common. Although these roads carry low volumes of traffic, they are subjected to heavy and channelized wheel loads. Unfortunately, conventional asphalt mixes containing aggregates less than 1-in. maximum size in the base or binder course tend to develop premature rutting u ...
  • 1991 Traffic Accident Facts and Statistics
    1991 Traffic Accident Facts and Statistics
    Pennsylvania. Dept. of Transportation
    1991-01-01 | PDF
    The 1991 TRAFFIC ACCIDENT FACTS AND STATISTICS is a report published by the Center for Highway Safety of the Pennsylvania Department of Transportation. This publication is a statistical review of reportable motor vehicle traffic accidents in the Commonwealth of Pennsylvania for the calendar year 1991. The figures are compiled from the traffic accid ...
  • Controller Evaluation of Initial Data Link Terminal Air Traffic Control Services Final Report
    Controller Evaluation of Initial Data Link Terminal Air Traffic Control Services: Final Report
    William J. Hughes Technical Center (U.S.). Data Link Development Team  ...
    1991-01-01 | PDF
    This document details the results the first Federal Aviation Administration Technical Center investigation of the initial terminal air traffic control services developed for transmission using Data Link technology. Initial Data Link services were evaluated in order to identify service delivery methods which optimize controller acceptance, performan ...
  • 19911992 Europe and Asia in Space
    1991-1992 Europe and Asia in Space
    Johnson, N. L. ;
    Rodvold, D. M.
    1991-01-01 | PDF
    Phillips Laboratory is proud to present this book describing the space activities of countries other than the United States. This book was prepared by KAMAN Sciences Corporation under the direction of the Studies and Analysis Division of the Phillips Laboratory. The KAMAN principal investigator was Mr. Nicholas Johnson. For 10 years Nick Johnson au ...
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