Now showing items 3341-3360 of 4147

    • Comparison of High-Speed Rail and Maglev Systems 

      Fazil T. Najafi; Fadi Emil Nassar (American Society of Civil Engineers, 1996)
      European and Japanese high-speed rail (HSR) and magnetically levitated (maglev) systems were each developed to respond to specific transportation needs within local economic, social, and political constraints. Not only is ...
    • Phosphogypsum Slag Aggregate-Based Asphaltic Concrete Mixes 

      Paul T. Foxworthy; Raju S. Nadimpalli; Roger K. Seals (American Society of Civil Engineers, 1996)
      Phosphogypsum is a by-product from the production of phosphoric acid used in the fertilizer and chemical industries. Large production rates and problems associated with its stockpiling have led researchers to seek alternative ...
    • Optimal Pipeline Sizing Technique 

      Helmi M. Hathoot; Ahmed I. Al-Amoud; Fawzi S. Mohammad (American Society of Civil Engineers, 1996)
      In this paper, the writers present a formula for sizing steel pipelines of optimal diameter with equally spaced, similar pumping units. The general case of an inclined pipeline with fitting is considered in the analysis. ...
    • Effect of Rest Periods on Fatigue Response of Asphalt Concrete Mixtures 

      Tung-Wen Hsu; Kuo-Hung Tseng (American Society of Civil Engineers, 1996)
      The purpose of this research is to study the effect of rest periods on the fatigue response of asphalt concrete mixtures due to the repeated loading applications by using linear elastic fracture mechanics and Schapery's ...
    • A Systematic Review of Busways 

      David R. Martinelli (American Society of Civil Engineers, 1996)
      Busways are controlled-access facilities dedicated for bus service separated from general traffic. The concept of busways was first given serious consideration in the 1960s; however, only a few of them have been constructed ...
    • Geographic Database for Traffic Operations Data 

      Cesar A. Quiroga; Darcy Bullock (American Society of Civil Engineers, 1996)
      State Transportation Departments nationwide manage huge amounts of information. Examples include geometric plans, sign inventories, maintenance records, engineering studies, and so on. In many cases, no indexing or archiving ...
    • Traffic Dynamics: Method for Estimating Freeway Travel Times in Real Time from Flow Measurements 

      Do H. Nam; Donald R. Drew (American Society of Civil Engineers, 1996)
      This paper presents a method for estimating freeway travel times in real time directly from flow measurements, which is desirable for present and future Intelligent Vehicle-Highway Systems (IVHS) applications. An inductive ...
    • Local Urban Transit Bus Impact on Pavements 

      Reed Gibby; Rebecca Dawson; Peter Sebaaly (American Society of Civil Engineers, 1996)
      Bus transit systems provide a valuable service to many residents living within urban areas. Like other vehicles, buses depend on paved streets and roads for a smooth ride. The pavement wear due to truck traffic has been ...
    • A Strategy for Solving Static Multiple-Optimal-Path Transit Network Problems 

      Nicholas Koncz; Joshua Greenfeld; Kyriacos Mouskos (American Society of Civil Engineers, 1996)
      The trip making process using transit versus private automobile differs in the use of time schedules, walking paths, transfer stops, plus issues such as fare and safety. Due to these factors, many of the standard shortest ...
    • Guardrail End-Types, Vehicle Weights, and Accident Severities 

      J. L. Gattis; M. S. Alguire; S. R. K. Narla (American Society of Civil Engineers, 1996)
      A study of guardrail end accidents on the Oklahoma State Highway System (1988–91) examined the severity of exposed and turned-down guardrail end accidents in relation to the type of end, vehicle weight, and vehicle rolling ...
    • Risk Management Principles of Transportation Facility Design Engineering 

      Andrew G. Cooley (American Society of Civil Engineers, 1996)
      Accidents continue to occur on our transportation facilities. People injured in these accidents continue to file lawsuits against transportation agencies, in part because the language used in published standards for design ...
    • Genetic-Algorithm Programming of Road Maintenance and Rehabilitation 

      T. F. Fwa; W. T. Chan; C. Y. Tan (American Society of Civil Engineers, 1996)
      This paper describes the development of a computer model (known as PAVENET-R) based on genetic algorithms, an optimization tool capable of overcoming combinatorial explosion, to solve the pavement maintenance-rehabilitation ...
    • Longitudinal Analysis of Bicycle Count Variability: Results and Modeling Implications 

      Debbie A. Niemeier (American Society of Civil Engineers, 1996)
      This research examines composition, weather, and time-of-year count variability for a longitudinal bicycle count program. The results indicate greater variability in the PM peak period than in the AM peak period, and this ...
    • Reexamining Vehicle-Actuation Strategies at Isolated Signalized Intersections 

      Michael Cassidy; Yu-Hao Chuang; Jeff Vitale (American Society of Civil Engineers, 1996)
      This paper uses simulation to assess intersection performance under enhanced vehicle-actuated signal control. The enhanced strategies seek to: (1) terminate green time in such a way as to promote use of the clearance ...
    • Analysis and Simulation of Road Profiles 

      V. Rouillard; M. A. Sek; T. Perry (American Society of Civil Engineers, 1996)
      The power spectral density (PSD) estimate is a parameter commonly used to characterize the acceleration of vehicles and, in conjunction with closed-loop random vibration controllers, to simulate the transport environment. ...
    • Formulation for Viscoelastic Response of Pavements under Moving Dynamic Loads 

      A. T. Papagiannakis; N. Amoah; R. Taha (American Society of Civil Engineers, 1996)
      This paper provides a time-domain solution to the problem of viscoelastic pavement response under moving dynamic loads. It assumes linear material behavior and uses Boltzman's principle to superimpose the effect of a loading ...
    • Performance of Polyethylene Parting Strips in PCC Pavements 

      Samuel P. Lawrence; Awad S. Hanna; Jeffrey S. Russell (American Society of Civil Engineers, 1996)
      There are two techniques for constructing longitudinal joints allowed by the Wisconsin Department of Transportation (WISDOT): (1) sawing; and (2) insertion of polyethylene parting strips during construction. Secondary ...
    • Dynamic Analysis of Resilient Crosstie Track for Transit System 

      M. J. Fatemi; M. F. Green; T. I. Campbell; A. Moucessian (American Society of Civil Engineers, 1996)
      A dynamic analysis of a new track system, developed for a light rail transit vehicle powered by linear induction motors (LIMs) is made by a specially developed computer package. The track system, which incorporates steel ...
    • Editorial 

      Chris Hendrickson (American Society of Civil Engineers, 1996)
    • Analysis of Concrete Pavements by Rectangular Thick-Plate Model 

      T. F. Fwa; X. P. Shi; S. A. Tan (American Society of Civil Engineers, 1996)
      Westergaard solutions for maximum bending stress and deflection are derived by assuming infinite slab width and length, and ignoring possible thick-plate behavior of slab under loading. This paper examines the effects of ...