Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 2721-2740 of 4147
-
Deterministic Models for Degraded Airside Capacity and Delays
(American Society of Civil Engineers, 2004)This paper presents deterministic models for estimating airspace and airport capacity and delays during equipment outages. The National Airspace System (NAS) is very complex and consists of almost 48,000 reportable facilities ... -
Upward Flow of Large Size Particles–Water Mixtures through Swaying Pipes
(American Society of Civil Engineers, 2004)Calculation of the hydraulic gradient due to the upward flow of a large size particles–water mixture in a swaying vertical pipe is a central problem in the design of systems for deep-sea mining of manganese modules. Here, ... -
Analysis of Link Capacity Estimation Methods for Urban Planning Models
(American Society of Civil Engineers, 2004)A common travel analysis technique is to ascribe capacities to links in a planning network based on functional classification or facility type, under which a four-lane divided arterial, for example, would be assigned the ... -
Feasibility of Assessing Bond Condition of Asphalt Concrete Layers with Dynamic Nondestructive Testing
(American Society of Civil Engineers, 2004)In the 1970s, the U.K. Transport Research Laboratory published a series of reports dealing with wearing course slippage due to debonding. At present, however, no accepted nondestructive test (NDT) technique exists for a ... -
Verification and Modeling of Three-Stage Permanent Deformation Behavior of Asphalt Mixes
(American Society of Civil Engineers, 2004)In laboratory testing of asphalt mixtures, the relationship between the number of load repetitions and permanent deformation has been found to include three distinct stages, namely the primary, secondary and tertiary stages. ... -
Discrete-Element Method Investigation of the Resilient Behavior of Granular Materials
(American Society of Civil Engineers, 2004)This paper presents the results of numerical simulations of the resilient modulus test used to mechanically characterize the resilient behavior of aggregate materials, commonly used in pavement bases and subbases. The ... -
Stress Predictions for Flexible Pavement Systems
(American Society of Civil Engineers, 2004)The present study proposes a method for predicting stresses in pavements under vehicular loadings. The proposed method characterizes each pavement layer by a coefficient of lateral stress, which is similar to the commonly ... -
Panel Data Analysis of Factors Affecting As-Built Roughness of Asphaltic Concrete Pavements
(American Society of Civil Engineers, 2004)This paper investigates the relationship between the as-built roughness of asphaltic concrete pavement and construction characteristics factors using panel (longitudinal) data analysis. This panel study utilizes as-built ... -
Optimizing Traffic Prediction Performance of Neural Networks under Various Topological, Input, and Traffic Condition Settings
(American Society of Civil Engineers, 2004)This paper presents an approach to optimize the short-term traffic prediction performance on freeways using multiple artificial neural network topologies under different network and traffic condition settings. The approach ... -
Investigating the Effect of Light Truck Vehicle Percentages on Rear-End Fatal Traffic Crashes
(American Society of Civil Engineers, 2004)Millions of Americans buy light truck vehicles (LTVs) each year to meet family, business, and personal travel needs. The main objective of this research is to study the effect of the increased percentage of LTVs in traffic ... -
Investigating the Effect of Light Truck Vehicle Percentages on Head-On Fatal Traffic Crashes
(American Society of Civil Engineers, 2004)The market share of light truck vehicles (LTVs) is increasing rapidly, causing a change in traffic composition in the United States. LTVs include vans, minivans, light duty trucks, and sport-utility vehicles. Users of such ... -
Microscopic Modeling of Driver Behavior in Uninterrupted Traffic Flow
(American Society of Civil Engineers, 2004)In this paper a comprehensive microscopic model of driver behavior in uninterrupted traffic flow is developed. The model aims to explain or predict the actions of a driver in a variety of driving scenarios ranging from ... -
Evaluation of Temperature Responses in Concrete Pavement
(American Society of Civil Engineers, 2004)Field data from a section of heavily instrumented concrete pavement on the Gene Snyder Freeway (I-265), Louisville, Kentucky were closely examined. To predict the mechanical behavior of the rigid pavement, a three-dimensional ... -
Highways, People, and Places: Past, Present, and Future
(American Society of Civil Engineers, 2004)America’s highways have developed dramatically over the last century, evolving into an extensive system of interconnected motorways. Lessons learned during this evolution suggest some future directions and challenges. ... -
Optimized Schedules for Airline Routes
(American Society of Civil Engineers, 2004)Increasing flight frequency on airline routes tends to reduce user delay costs but increase airline operating costs. Flight frequency should vary as demand intensity changes at various times of day. Models are presented ... -
Discussion of “Effect of Lane Width on Capacity under Mixed Traffic Conditions in India” by Satish Chandra and Upendra Kumar
(American Society of Civil Engineers, 2004) -
Cyclic Triaxial Tests on Clay Subgrades for Analytical Pavement Design
(American Society of Civil Engineers, 2004)To introduce a performance specification, pavement foundations must be designed using analytical methods incorporating the laboratory measured parameters of resilient elastic modulus and resistance to permanent deformation ... -
Effect of Road Roughness on Capacity of Two-Lane Roads
(American Society of Civil Engineers, 2004)The Highway Capacity Manual (2000) states that the capacity of a two-lane rural highway under ideal conditions is 3200 passenger car unit per hour for both directions combined. The ideal conditions as given in the manual ... -
Effect of Stress-Dependent Modulus and Poisson’s Ratio on Structural Responses in Thin Asphalt Pavements
(American Society of Civil Engineers, 2004)Most low-volume roads are primarily thin flexible pavements with an unbound base and subgrades. This is especially true for the behavior of unbound pavement materials, which is very nonlinear and stress dependent, even at ... -
Relationship between Light Rail Systems Design and System Operations
(American Society of Civil Engineers, 2004)Light rail transit (LRT) offers the widest range of opportunities to the design community in “applications engineering.” There are certainly more varied possibilities in the design and configuration of LRT than in that of ...