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Showing 34601 - 34620 of 36747 results
  • Construction of zone delineation raised reflective markers
    Construction of zone delineation raised reflective markers
    Beecroft, Gordon
    1978-08-01 | PDF
    No Description
  • Determination of shell content by activation analysis final report
    Determination of shell content by activation analysis : final report.
    Melancon, James
    1978-08-01 | PDF
    The objective of this study is to determine if neutron activation analysis technique, developed under Research Project 70-1ST, can be used to determine the shell content of a sand-shell mixture.In order to accomplish this objective, samples of sand and shell were obtained from different sources. The material sampled was artificially blended in the ...
  • InService Performance and Costs of Methods to Control Urban Rail System Noise Initial Test Series Report Interim Report
    In-Service Performance and Costs of Methods to Control Urban Rail System Noise: Initial Test Series Report: Interim Report
    Shipley, Robert L. ;
    Saurenman, Hugh J.
    1978-08-01 | PDF
    The purpose of this project is to determine the acoustic and economic effectiveness of resilient wheels, damped wheels, wheel truing, and rail grinding for reducing wheel/rail noise on urban rail transit systems. The project consists of a six-phase series of field tests being performed on the Southeastern Pennsylvania Transportation Authority Syste ...
  • 33 Truckers Will Compete in Double Nickle Challenge
    33 Truckers Will Compete in Double Nickle Challenge
    United States. Department of Transportation
    1978-07-28 | PDF
    Thirty-three big-rig truck operators from 20 states will challenge the U.S. Department of Transportation in a fuel economy competition at the Transportation Research Center.
  • Application of the TEXAS Model for Analysis of Intersection Capacity and Evaluation of Traffic Control Warrants
    Application of the TEXAS Model for Analysis of Intersection Capacity and Evaluation of Traffic Control Warrants
    Lee, Clyde E. ;
    Savur, Vivek S.
    1978-07-01 | PDF
    The TEXAS Model for Intersection Traffic is a microscopic simulation package describing the behavior of individual driver-vehicle units at isolated intersections. This report deals with two applications of this model, namely determining the capacity of an intersection and analysis of warrants for traffic signal control. Service volume has been rela ...
  • Washington State Department of Transportations first asphalt concrete recycling projectrenslow to ryegrass
    Washington State Department of Transportation's first asphalt concrete recycling project--renslow to ryegrass
    LeClerc, R. V. ;
    Schermerhorn, R. L.
    1978-07-01 | PDF
    This asphalt concrete recycling project, the first attempted by the Washington State Department of Transportation, seems so far to be very successful. The project looks good from a standpoint of economy, energy use, conservation of natural resources, feasibility of construction, and from an evaluation of the test data obtained to date. Certain pitf ...
  • Temperature Induced Stresses in Highway Bridges by Finite Element Analysis and Field Tests
    Temperature Induced Stresses in Highway Bridges by Finite Element Analysis and Field Tests
    Yargicoglu, Atalay ;
    Johnson, C Phillip
    1978-07-01 | PDF
    This research focused on the application of finite element computer programs to the transient heat conduction and static stress analysis of bridge-type structures. The temperature distribution is assumed to be constant along the center-line of the bridge but can vary arbitrarily over its cross section. A computer program, TSAP, was developed for th ...
  • Land Use Impact of Widening Texas Avenue South in a Developing Area in College Station Texas
    Land Use Impact of Widening Texas Avenue South in a Developing Area in College Station, Texas
    Cosby, Pamela J. ;
    Buffington, Jesse L.
    1978-07-01 | PDF
    Previous studies on the effects of highway construction upon land use have 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 repo ...
  • Reactions of Methamidophos with Mammalian Cholinesterase
    Reactions of Methamidophos with Mammalian Cholinesterase
    Robinson C.P. ;
    Beiergrohslein D.
    1978-07-01 | PDF
    The lethality of methamidophos, a phosphoramidothioate, to rats (i.p. LD50, 15 mg/kg), is similar to that of such potent organophosphate compounds as parathion and paraoxon. Certain distinctive features of its chemical structure, and reported failure of cholinesterase inhibited with methamiodophos to reactivate spontaneously in insects, prompted th ...
  • US Begins New Campaign to Bolster 55 MPH Speed Limit
    U.S. Begins New Campaign to Bolster 55 MPH Speed Limit
    United States. Department of Transportation
    1978-06-27 | PDF
    The U.S. Department of Transportation initiates a new media campaign to encourage drivers to comply with the national 55 mph speed limit.
  • DOT EPA Join to Combat TransportationCaused Pollution in Urban Areas
    DOT, EPA Join to Combat Transportation-Caused Pollution in Urban Areas
    United States. Department of Transportation
    1978-06-16 | PDF
    The Department of Transportation and the Environmental Protection Agency announce a joint effort to help cities improve air quality through transportation planning.
  • Evaluation of seating and restraint systems and anthropomorphic dummies conducted during fiscal year 1977
    Evaluation of seating and restraint systems and anthropomorphic dummies conducted during fiscal year 1977.
    Chandler, Richard F. ;
    Trout, Edwin M.
    1978-06-01 | PDF
    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 investigate the performance of anthropomorphic dummies in the dynamic environment are reported. The data ...
  • Estimating procedure for major highway construction bid item cost final report
    Estimating procedure for major highway construction bid item cost : final report.
    Louisiana. Department of Highways. Research and Development Section
    1978-06-01 | PDF
    The present procedure for estimating construction bid item cost makes use of the quarterly weighted average unit price report coupled with engineering judgement. The limitation to this method is that this report format provides only the lowest bid data distributed over the entire three-month period. Furthermore, it fails to recognize the dependency ...
  • Chemical Compaction Aids for FineGrained Soils Vol I
    Chemical Compaction Aids for Fine-Grained Soils: Vol. I
    Hoover, James M. ;
    Handy, Richard L.
    1978-06-01 | PDF
    Soil is man's cheapest and most abundant construction material, and compaction is the most widely used method of strengthening soils and making them suitable for construction uses. The technology of compaction, while improving, remains largely in a trial and error state, emphasizing the basic moisture-density relationships discovered by R.R. Procto ...
  • Highway Air Quality Impact Appraisals Volume II Guidance for Highway Planners and Engineers
    Highway Air Quality Impact Appraisals: Volume II - Guidance for Highway Planners and Engineers
    Pollack, R. I. ;
    Tesche, T.W.
    1978-06-01 | PDF
    This report is the second of a two volume series titled, "Highway Air Quality Impact Appraisals--Volume I, Introduction to Air Quality Analyses, and Volume II, Guidance for Highway Planners and Engineers." These two reports are intended to provide transportation planners and engineers with guidance in how to perform air quality analyses. This volum ...
  • Behavior of PostTensioned PolymerImpregnated Concrete Beams
    Behavior of Post-Tensioned Polymer-Impregnated Concrete Beams
    Limsuwan, Ekasit ;
    Fowler, David W.
    1978-06-01 | PDF
    This study was conducted to investigate the behavior of post-tensioned polymer-impregnated concrete (PIC) beams. Three major areas of behavior were studied by experimental and theoretical analyses: flexure, shear, and time-dependent deflections. Test results were compared to values calculated according to ACI Standard 318-71 and to results from num ...
  • Chemical Compaction Aids for FineGrained Soils Vol II
    Chemical Compaction Aids for Fine-Grained Soils: Vol. II
    Hoover, James M. ;
    Handy, Richard L.
    1978-06-01 | PDF
    This paper includes moisture-density-strength screening tests performed on several additional chemicals and an evaluation of the standard AASHTO T-99 moisture-density tests results performed on soil specimens prepared under varying conditions of drying, pulverization, and re-use. Theory and applicability of project use of the Iowa K-Test for determ ...
  • Highway Air Quality Impact Appraisals Volume I Introduction to Air Quality Analysis
    Highway Air Quality Impact Appraisals: Volume I - Introduction to Air Quality Analysis
    Pollack, R. I. ;
    Tesche, T.W.
    1978-06-01 | PDF
    This report is the first of a two volume series titled, "Highway Air Quality Impact Appraisals-Volume I, Introduction to Air Quality Analyses, and Volume II, Guidance for Highway Planners and Engineers." These two reports are intended to provide transportation planners and engineers with guidance on how to perform air quality analyses. Volume I pre ...
  • GPSS Computer Simulation of Aircraft Passenger Emergency Evacuations
    GPSS Computer Simulation of Aircraft Passenger Emergency Evacuations
    Garner, J.D. ;
    Chandler, R.F.
    1978-06-01 | PDF
    The costs of civil air transport emergency evacuation demonstrations using human subjects have risen as seating capacities of these aircraft have increased. Repeated tests further increase the costs and also the risks of injuries to participants. A method to simulate such evacuations, by use of a computer model based on statistics from measured com ...
  • Integrated Motorist Information System IMIS Feasibility and Design Study Phase II Generalized Methodology for IMIS Feasibility Studies Volume 2 Validation and Application of Feasibility Study Handbook
    Integrated Motorist Information System (IMIS) Feasibility and Design Study: Phase II: Generalized Methodology for IMIS Feasibility Studies: Volume 2 - Validation and Application of Feasibility Study Handbook
    Zove, P. ;
    Berger, C.
    1978-05-01 | PDF
    Phase I of the IMIS project examined the feasibility of implementing an Integrated Motorist Information System in a corridor located in New York (northern Long Island). The results are documented in report numbers FHWA-RD-77-47, 48, and 49 Under Phase II of IMIS (the present phase) the methodology for performing an IMIS feasibility study was genera ...
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