Now showing items 2521-2540 of 4147

    • Modeling Crash Types: New Insights into the Effects of Covariates on Crashes at Rural Intersections 

      Do-Gyeong Kim; Simon Washington; Jutaek Oh (American Society of Civil Engineers, 2006)
      Many studies focused on the development of crash prediction models have resulted in aggregate crash prediction models to quantify the safety effects of geometric, traffic, and environmental factors on the expected number ...
    • Derivation of Transition Probability Matrices for Pavement Deterioration Modeling 

      José J. Ortiz-García; Seósamh B. Costello; Martin S. Snaith (American Society of Civil Engineers, 2006)
      The derivation of transition matrices has traditionally been effected using one of two methods. The standard approach is to observe, from historical data, the way in which a road network deteriorates from one year to the ...
    • Model to Predict Pavement Temperature Profile: Development and Validation 

      Brian K. Diefenderfer; Imad L. Al-Qadi; Stacey D. Diefenderfer (American Society of Civil Engineers, 2006)
      Flexible pavements comprise a majority of the primary highways in the United States. These primary highways are subjected to heavy loading that can cause significant damage to the hot-mix asphalt (HMA) pavements. As HMA ...
    • Probabilistic Model for Signalized Intersection Capacity with a Short Right-Turn Lane 

      Zong Z. Tian; Ning Wu (American Society of Civil Engineers, 2006)
      The paper presents a capacity estimation model for a signalized intersection approach with a short right-turn lane. The proposed model overcomes one of the major shortcomings of the current capacity estimation methodologies ...
    • Benefit-Cost Analysis of Variable Pricing Projects: SR-91 Express Lanes 

      Edward Sullivan; Mark Burris (American Society of Civil Engineers, 2006)
      Researchers identified a methodology for obtaining the incremental societal costs and benefits for a variable pricing project and applied that methodology to the State Route 91 (SR-91) Express Lanes in California. This is ...
    • Fatigue and Healing of Asphalt Mixtures: Discriminate Analysis of Fatigue Curves 

      María Castro; José A. Sánchez (American Society of Civil Engineers, 2006)
      Fatigue laws obtained by means of laboratory tests do not usually take into account the fact that asphalt mixtures in highways have rest periods (without loads). These rest periods tend to increase the fatigue life of ...
    • Vehicle Level Evaluation of Loop Detectors and the Remote Traffic Microwave Sensor 

      Benjamin Coifman (American Society of Civil Engineers, 2006)
      Traffic detectors support most traffic management applications, so it is important that a detector performs as expected. This study evaluates the performance of four loop sensor models and the remote traffic microwave ...
    • Soil Restraint to Oblique Movement of Buried Pipes in Dense Sand 

      Tung-Wen Hsu; Yuh-Jyh Chen; Way-Chang Hung (American Society of Civil Engineers, 2006)
      The soil restraints to oblique movement of buried pipes in dense sand were investigated. Model pipes 0.61 m long with diameters of 152.4, 228.6, and 304.8 mm were obliquely moved from an axial-longitudinal to a lateral-transversal ...
    • Predicting Speeds in an Urban Right-Turn Lane 

      Kay Fitzpatrick; William H. Schneider IV; Eun Sug Park (American Society of Civil Engineers, 2006)
      Right-turn lanes are used to provide space for the deceleration and storage of turning vehicles and to separate the turning vehicles from the through movement. When larger corner radii are used at the right turn, vehicles ...
    • Benefit-Cost Analysis of Variable Pricing Projects: QuickRide HOT Lanes 

      Mark Burris; Edward Sullivan (American Society of Civil Engineers, 2006)
      Researchers identified a potential methodology for obtaining the incremental societal costs and benefits from a variable pricing project and applied that methodology to the QuickRide high occupancy/toll (HOT) lanes in ...
    • Borrowing Residential Trip Generation Rates 

      John S. Miller; Lester A. Hoel; Arkopal K. Goswami; Jared M. Ulmer (American Society of Civil Engineers, 2006)
      Residential trip generation rates are a fundamental component of transportation planning. To investigate discrepancies in these rates, residential trip generation rates for nine suburban neighborhoods were computed using ...
    • Short-Term Freeway Traffic Flow Prediction: Bayesian Combined Neural Network Approach 

      Weizhong Zheng; Der-Horng Lee; Qixin Shi (American Society of Civil Engineers, 2006)
      Short-term traffic flow prediction has long been regarded as a critical concern for intelligent transportation systems. On the basis of many existing prediction models, each having good performance only in a particular ...
    • Using a Simulated Annealing Algorithm to Solve the Transit Route Network Design Problem 

      Wei Fan; Randy B. Machemehl (American Society of Civil Engineers, 2006)
      This paper uses a simulated annealing algorithm to solve the optimal bus transit route network design problem (BTRNDP) at the distribution node level. A multiobjective nonlinear mixed integer model is formulated for the ...
    • Statistical Modeling of User Perceptions of Infrastructure Condition: Application to the Case of Highway Roughness 

      Kevan Shafizadeh; Fred Mannering (American Society of Civil Engineers, 2006)
      In determining certain infrastructure rehabilitation needs, it is sometimes important to consider user perceptions along with physical measures of infrastructure condition. Pavement roughness is one such case. A critical ...
    • Reviewers 

      Unknown author (American Society of Civil Engineers, 2006)
    • Evaluation of Local Bending in Profile-Wall Polyethylene Pipes 

      Ashutosh S. Dhar; Ian D. Moore (American Society of Civil Engineers, 2006)
      Thermoplastic pipes with a wide variety of wall geometries have been developed to obtain higher stiffness with utilization of less pipe material. The geometries of these profiles induce local bending, which may influence ...
    • Reliable Real-Time Framework for Short-Term Freeway Travel Time Prediction 

      J. W. van Lint (American Society of Civil Engineers, 2006)
      It is widely acknowledged that traffic information has the potential of increasing the reliability in road networks and in alleviating congestion and its negative environmental and societal side effects. However, for these ...
    • Reversible Lane Systems: Synthesis of Practice 

      Brian Wolshon; Laurence Lambert (American Society of Civil Engineers, 2006)
      Reversible roadways have been used throughout the world to mitigate the effects of congestion and optimize roadway performance for more than 70 years. They have been applied on a variety of roadway types using many different ...
    • Design and Performance of Stone Mastic Asphalt 

      Y. F. Qiu; K. M. Lum (American Society of Civil Engineers, 2006)
      Accurate quantification of aggregate gradation is essential for a better understanding of its effect on the load-carrying capacity of an asphalt mixture. This is even more applicable for stone mastic asphalt (SMA), where ...
    • Model for Three-Dimensional Highway Alignment 

      Juey-Fu Cheng; Yusin Lee (American Society of Civil Engineers, 2006)
      This research develops a model to solve for the three-dimensional alignment of a highway segment. Code requirements are taken into consideration, and mechanisms for maintaining heavy vehicle speeds are embedded in the ...