Journal of Transportation Engineering, Part A: Systems: Recent submissions

Now showing items 3301-3320 of 4147

    • Integrated Model for Lane-Use and Signal-Phase Designs 

      William H. K. Lam; Antonio C. K. Poon; Gregory K. S. Mung (American Society of Civil Engineers, 1997)
      The development of a codable model for the design of lane-use and signal-phase control at isolated intersections is valuable especially in developing countries where experienced traffic engineers are scarce. Extensive ...

    • Program BIMODPAV for Analysis of Flexible Pavements 

      Punya P. Khanal; Michael S. Mamlouk (American Society of Civil Engineers, 1997)
      A new axisymmetric finite-element pavement-analysis program BIMODPAV capable of accounting for the bimodular nature of the asphalt concrete is developed. The program also considers the nonlinear behavior of the base, ...

    • Design Considerations for Combined Highway Alignments 

      Y. Hassan; S. M. Easa; A. O. Abd El Halim (American Society of Civil Engineers, 1997)
      According to current highway design standards, horizontal and vertical alignments are treated separately in two-dimensional (2D) projections. In this paper, a model developed by the writers is used to study the effects of ...

    • Rut Susceptibility of Large Stone Mixtures 

      Emmanuel G. Fernando; Joe W. Button; William W. Crockford (American Society of Civil Engineers, 1997)
      The rut susceptibility of large stone mixtures (LSMs) was evaluated from laboratory materials characterization tests that included compressive creep and recovery tests on LSMs and conventional base mixtures, and repetitive ...

    • Urban Airborne and Blood Lead Analyses Using Neural Networks 

      John P. Grubert (American Society of Civil Engineers, 1997)
      A feed-forward back-propagation–type neural network was applied to airborne lead data collected around a busy highway interchange in Birmingham, England. The data were taken during the early 1970s, when lead emissions from ...

    • Probabilistic Model for Conflicts at Urban Uncontrolled Intersection 

      V. Trinadha Rao; V. R. Rengaraju (American Society of Civil Engineers, 1997)
      A study of interactions among crossing vehicles at an intersection forms an important attribute for evaluating the safety at urban uncontrolled intersections. In the present study, an attempt is made to develop a methodology ...

    • Effects of Air Valves and Pipework on Water Hammer Pressures 

      David Stephenson (American Society of Civil Engineers, 1997)
      Many water hammer studies concentrate on the main pipeline and pump stopping. Important details can be overlooked. The rigidity of pipe walls, coatings, and surrounding fill on water hammer in pipes is evaluated. It is ...

    • Upgrading Railroad Test Track, Pueblo, Colorado 

      Kenneth Briggs III; Kenneth Chamberlain (American Society of Civil Engineers, 1997)
      The railroad test track (RTT) at the Transportation Technology Center (TTC) in Pueblo, Colo., was constructed in the early 1970s to support high-speed testing of new railroad rolling stock. Through the years it has been ...

    • Evaluation of Vehicle-Specific Information in Traffic Control Systems 

      Alireza Kamyab; T. H. Maze; Reginald R. Souleyrette (American Society of Civil Engineers, 1996)
      This paper assumes that in an intelligent transportation system (ITS) traffic control environment, traffic control systems will be able to track vehicles individually in a traffic stream through automatic vehicle-specific ...

    • Impact of Freeway Geometric and Incident Characteristics on Incident Detection 

      H. M. Al-Deek; S. S. Ishak; A. A. Khan (American Society of Civil Engineers, 1996)
      The potential improvement in incident detection can be achieved by examining the major factors that may influence incident rates and incident detection rates. The subsections of the central I-4 corridor were grouped by ...

    • Statewide Traffic Volume Studies and Precision of AADT Estimates 

      Satish C. Sharma; Brij M. Gulati; Samantha N. Rizak (American Society of Civil Engineers, 1996)
      Investigated in this paper is the statistical precision of annual average daily traffic (AADT) estimates resulting from short period traffic counts (SPTC). A large number of automatic traffic recorder (ATR) sites located ...

    • Database Preparation for Pavement Modeling—Virginia's Experience 

      Adel W. Sadek; Thomas E. Freeman; Michael J. Demetsky (American Society of Civil Engineers, 1996)
      The successful development of deterioration prediction models requires an adequate and reliable database. The task of preparing the database for developing refined deterioration models for Virginia's interstate pavements ...

    • Effect of Geogrid Reinforcement in Model Track Tests on Pavements 

      Fereidoon Moghaddas-Nejad; John C. Small (American Society of Civil Engineers, 1996)
      An experimental program was carried out to investigate the influence that a geogrid has as reinforcement for the granular base layer of a flexible pavement constructed on sand. Tests were performed using a model testing ...

    • Nonurbanized Public Transportation Needs Assessment 

      M. Moussavi; M. Al-Turk; J. Albeck (American Society of Civil Engineers, 1996)
      The ability to predict the demand for rural intracounty public transportation has become increasingly important in recent years. In this study, an attempt was made to predict the future intracounty public transportation ...

    • Analysis of Rules and Regulations for Metal Coil Truck Transport 

      W. Bradford Cross; Richard Romick-Allen; Nader Panahshahi; Steven J. Hanna (American Society of Civil Engineers, 1996)
      Trucks transporting metal coils are known to have been involved in several serious incidents resulting in property damage as well as loss of life. Examples include the loss of two 9,072 kg (20,000 lb) coils on a flatbed ...

    • California HSR Corridor Evaluation and Environmental Constraints Analysis 

      Paul Taylor; Daniel S. Leavitt; Kip D. Field (American Society of Civil Engineers, 1997)
      California is studying the feasibility of a statewide, high-speed rail (HSR) transportation system as a link between major cities in the northern and southern portions of the state. This system will complement the state's ...

    • Optimization of Grid Transit System in Heterogeneous Urban Environment 

      Steven Chien; Paul Schonfeld (American Society of Civil Engineers, 1997)
      Current analytic models for optimizing urban transit systems tend to sacrifice geographic realism and detail in order to obtain their solutions. The model presented here shows how an optimization approach can be successful ...

    • Benefits of Dipped Vertical Alignments for Rail Transit Routes 

      Dong N. Kim; Paul M. Schonfeld (American Society of Civil Engineers, 1997)
      Dipped track profiles between rail transit stations can significantly reduce propulsive energy, braking energy, and travel times. This work quantifies their potential benefits for circumstances reflected in various values ...

    • Disaggregate Gap-Acceptance Model for Unsignalized T-Intersections 

      M. M. Hamed; S. M. Easa; R. R. Batayneh (American Society of Civil Engineers, 1997)
      This paper develops a system of disaggregate models that accounts for the effect of intersection, driver, and traffic characteristics on gap acceptance for left-turn maneuvers at urban T-intersections controlled by stop ...

    • Cellular Rigid Pavement 

      John K. Bright; John R. Mays (American Society of Civil Engineers, 1996)
      A construction method for rigid pavement utilizing waste plastic for forms to create cells is analyzed for stress resulting from application of a standard highway equivalent single axle load (ESAL). The finite-element ...