Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 2261-2280 of 4147
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Statistical Model for Forecasting Link Travel Time Variability
(American Society of Civil Engineers, 2009)In the field of advanced traveler information systems, travel time reliability contributes significantly to the utility of traffic information affecting the traveler’s choice. The exact estimation of the variance in travel ... -
Transit Route Network Design Problem: Review
(American Society of Civil Engineers, 2009)Efficient design of public transportation networks has attracted much interest in the transport literature and practice, with many models and approaches for formulating the associated transit route network design problem ... -
Harnessing the Power of Microscopic Simulation to Evaluate Freeway Service Patrols1
(American Society of Civil Engineers, 2009)Public agencies have been increasing their use of freeway service patrols (FSPs) to help with incident detection, verification, response, and motorist support. Using the microscopic simulation software PARAMICS, this study ... -
Differences in Freeway Capacity by Day of the Week, Time of Day, and Segment Type
(American Society of Civil Engineers, 2009)Capacity has traditionally been defined deterministically, and has been assumed to occur immediately before breakdown. Recent studies, however, have shown that the value of capacity, i.e., maximum throughput, is probabilistic, ... -
Edward C. Sullivan: Nov. 21, 1944–Feb. 16, 2009
(American Society of Civil Engineers, 2009) -
Lane-Based Dynamic Merge Control Strategy Based on Optimal Thresholds for Highway Work Zone Operations
(American Society of Civil Engineers, 2009)Despite the potential effectiveness of the dynamic late merge (DLM) control, most existing DLM systems, based on static thresholds, cannot best perform under time-varying traffic conditions. This paper presents an advanced ... -
Theoretical and Empirical Relationships for the Quality of Flow and for a New Level of Service on Two-Lane Highways
(American Society of Civil Engineers, 2009)This study has three main objectives: (1) to develop new, theory-based, queuing relationships for the quality of flow on two-lane rural highways; (2) to estimate the relationships both from the empirical data that were ... -
Pedestrian and Vehicle Flow Calibration in Multimodal Traffic Microsimulation
(American Society of Civil Engineers, 2009)This paper provides a method for including pedestrians in a vehicle microsimulation model, specifically the VISSIM model. VISSIM provides a default mechanism for simulating pedestrian movements; however, this does not ... -
Stochastic Optimization Model and O ( N2 ) Solution Algorithm for Highway Investment Decision Making under Budget Uncertainty
(American Society of Civil Engineers, 2009)One of the key tasks in highway investment decision making is to conduct project selection. The existing optimization models for project selection concerning an entire highway system do not address the issue of budget ... -
Microscopic Analysis of Service Delay at Uncontrolled Intersections in Mixed Traffic Conditions
(American Society of Civil Engineers, 2009)Several studies are available in the literature on delays at unsignalized intersections under homogeneous and lane-disciplined traffic conditions. The present study introduces a service delay model based on microscopic ... -
Microscopic Dual-Regime Model for Single-Lane Roundabouts
(American Society of Civil Engineers, 2009)Most of microsimulation tools used to model roundabouts encompass classical gap-acceptance algorithms to represent the insertion of approaching vehicles into the circulatory roadway. However, these algorithms fail to ... -
Valuing Travel Attributes of Rural Feeder Service to Bus Stop: Comparison of Different Logit Model Specifications
(American Society of Civil Engineers, 2009)A stated choice experimentation is carried out to capture the responses of rural commuters for feeder service to a bus stop. The data are analyzed for calculating users’ willingness-to-pay (WTP) values using different model ... -
Fuzzy Data Mining Approach for Quantifying Signalized Intersection Level of Services Based on User Perceptions
(American Society of Civil Engineers, 2009)This paper deals with how users perceive quality of service at signalized intersections and how many levels of service (LOS) drivers are able to perceive. A carefully designed laboratory experiment was conducted to create ... -
Impacts of Intercycle Demand Fluctuations on Delay
(American Society of Civil Engineers, 2009)This paper demonstrates that in addition to intracycle demand fluctuation, which is already a consideration in many delay models, intercycle demand variance also impacts average delay at signalized intersections. Webster-type ... -
Evaluation of Current Repair Criteria for Longitudinal Barrier with Crash Damage
(American Society of Civil Engineers, 2009)To protect motorists and avoid tort liability, highway agencies expend considerable resources to repair damaged longitudinal barriers, such as w-beam guardrails. With limited funding available, though, highway agencies are ... -
Finite-Element Model for Urban Pavement Rutting: Analysis of Pavement Rehabilitation Methods
(American Society of Civil Engineers, 2009)This paper concerns analysis of rutting of urban pavements using finite-element modeling, which takes into account the nonlinear behavior of the pavement materials and the complex traffic condition. A viscoplastic constitutive ... -
Traffic Data Collection under Mixed Traffic Conditions Using Video Image Processing
(American Society of Civil Engineers, 2009)Traffic data collection under mixed traffic conditions is one of the major problems faced by researchers as well as traffic regulatory authorities. Study and analysis of traffic behavior is critically dependent on the ... -
Operational Performance Assessment for Two-Lane Highway Facilities
(American Society of Civil Engineers, 2009)Transportation professionals have indicated that a facility-based evaluation methodology for two-lane highways would be much more useful and practical to them than just the individual segment and point analysis methodologies. ... -
Optimization Method for Highway Horizontal Alignment Design
(American Society of Civil Engineers, 2009)This research presents an optimization heuristic to solve the horizontal alignment of a highway segment. The iterative heuristic works in two stages. The first stage uses a neighborhood search approach to find a good ... -
Repeated Creep Behavior of Polypropylene Fiber-Reinforced Bituminous Mixtures
(American Society of Civil Engineers, 2009)In recent years, research has been devoted to the control of permanent deformations in flexible pavements. In order to prevent rutting, fatigue, and low-temperature cracking, different types of polymer modifiers have been ...