Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 2501-2520 of 4147
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Transverse Pavement Grooving against Hydroplaning. I: Simulation Model
(American Society of Civil Engineers, 2006)Hydroplaning on a pavement surface with a film of water occurs when a vehicle reaches a critical speed and results in a loss of contact between its tires and the pavement surface. Pavement groovings, especially transverse ... -
Modeling of Pavement Response Using Nonlinear Cross-Anisotropy Approach
(American Society of Civil Engineers, 2006)The multidepth deflectometer (MDD) is used to estimate flexible pavement response subjected to permitted overweight truck traffic (gross vehicle weight up to 556 kN). This study focuses on using material constitutive models ... -
Enhancing Short-Term Traffic Forecasting with Traffic Condition Information
(American Society of Civil Engineers, 2006)One of the key functions of traffic management systems is to monitor traffic conditions and detect the presence of conditions that are abnormal or may not be expected. As archiving of traffic data becomes less costly and ... -
Speed Distribution Curves under Mixed Traffic Conditions
(American Society of Civil Engineers, 2006)Most of the studies available in the literature indicate that the speed data on a highway follow the normal distribution. The present study indicates that the speed distribution may be a unimodal or a bimodal curve depending ... -
Analysis of Flexible Pavement Response and Performance Using Isotropic and Anisotropic Material Properties
(American Society of Civil Engineers, 2006)Several research studies have shown that unbound pavement layers exhibit anisotropic properties. Anisotropy is caused by the preferred orientation of the aggregate, to which both the shape characteristics of the aggregate ... -
Evaluating the Safety Risk of Narrow Medians Using Reliability Analysis
(American Society of Civil Engineers, 2006)In British Columbia, many highways are located in mountainous terrain and the costs of highway construction in these areas are high. One method of controlling construction costs is narrow medians but the safety consequences ... -
Neural Network-Wavelet Microsimulation Model for Delay and Queue Length Estimation at Freeway Work Zones
(American Society of Civil Engineers, 2006)Recently, the writers developed a new mesoscopic-wavelet model for simulating freeway traffic flow patterns and extracting congestion characteristics. As an extension of that research, in this paper, a new neural network-wavelet ... -
Safe Distance between Large-Diameter Rock Pipe Bursting and Nearby Buildings and Buried Structures
(American Society of Civil Engineers, 2006)Owners of nearby utilities and structures often voice concerns about potential damage to their facilities—particularly during bursting and upsizing of large-diameter pipes in hard rock formations. This paper summarizes ... -
Algorithm Fusion for Detecting Incidents on Singapore’s Central Expressway
(American Society of Civil Engineers, 2006)Many studies have focused mainly on the development of a single automatic incident detection algorithm to detect incident occurrences, and the performance obtained has often been mixed. In this study, an algorithm fusion ... -
Evacuation Route Selection Based on Tree-Based Hazards Using Light Detection and Ranging and GIS
(American Society of Civil Engineers, 2006)Falling trees pose a great hazard to the safe and uninterrupted use of the road transportation system during storm events. The present process of manually identifying potentially hazardous trees is laborious and inefficient. ... -
Modeling Driver Visual Demand on Three-Dimensional Highway Alignments
(American Society of Civil Engineers, 2006)This research focuses on evaluating driver visual demand on three-dimensional (3D) highway alignments, consisting of combined horizontal and vertical alignments. Using a driving simulator, nine two-dimensional and 3D ... -
Modeling and Analysis of the Link between Accessibility and Employment Growth
(American Society of Civil Engineers, 2006)Various accessibility measures, differing in terms of their definitions and formulations, have been proposed over the past -
Multiobjective Plan Selection Optimization for Traffic Responsive Control
(American Society of Civil Engineers, 2006)Optimal coordination of traffic signals requires proper activation of timing plans to match current traffic conditions. One of the greatest challenges in configuring a traffic responsive plan selection control mode is how ... -
Traffic Data Collection Requirements for Reliability in Pavement Design
(American Society of Civil Engineers, 2006)This paper presents a comprehensive approach for establishing the minimum traffic data collection requirements for predicting pavement life within an acceptable error, given a reliability level. Pavement life is predicted ... -
Risk Factors to Driver Fatalities in Single-Vehicle Crashes: Comparisons between Non-Motorcycle Drivers and Motorcyclists
(American Society of Civil Engineers, 2006)Single-vehicle crash data for 2000 from Taiwan’s Road Accident Investigation & Reporting System were employed to compare fatality risk factors between non-motorcycle drivers and motorcyclists. On average, motorcyclists had ... -
Probabilistic Neural Networks Application for Vehicle Classification
(American Society of Civil Engineers, 2006)Federal, state, and local agencies use vehicle classification data for planning, design, and conducting safety and operational evaluation of highway facilities. In conformity with federal reporting requirements, most states ... -
Iterative Linear Approach for Nonlinear Nonhomogenous Stochastic Pavement Management Models
(American Society of Civil Engineers, 2006)An iterative linear stochastic pavement management model is proposed that deploys a nonhomogenous discrete-time Markov chain for predicting the future pavement conditions for a given pavement network. A nonhomogenous ... -
Economic Heuristic Optimization for Heterogeneous Fleet VRPHESTW
(American Society of Civil Engineers, 2006)A three-step local search algorithm based on a probabilistic variable neighborhood search is presented for the vehicle routing problem with a heterogeneous fleet of vehicles and soft time windows (VRPHESTW). A generation ... -
Methodology to Develop Median Barrier Warrant Criteria
(American Society of Civil Engineers, 2006)Median design policies for high-speed, divided highways are investigated to assess existing median barrier warrant criteria. Safety and cost-effectiveness analyses were conducted to determine relationships between ... -
Lessons Learned on Jointed Concrete Pavement Rehabilitation Strategies in Texas
(American Society of Civil Engineers, 2006)Reflective cracking through jointed concrete pavement overlays has been a persistent problem. Several different rehabilitation strategies have been used in Texas. This paper is a summary of the performance of strategies ...