Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 1581-1600 of 4147
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Recommendations for the Minimum Thickness of Concrete Pavements Supporting F-15 and C-17 Aircrafts
(American Society of Civil Engineers, 2015)The procedure for the design of military rigid airfield pavements contained in the Unified Facilities Criteria 3-260-02 gives the minimum thickness of airfield concrete pavements as 152 mm (6 in.). The introduction of the ... -
Marginal Benefit of Adding Antennas to Bluetooth Sensor Arrays in Freeway Travel Time Data Collection
(American Society of Civil Engineers, 2014)The use of Bluetooth detection systems for collecting travel time data is becoming increasingly popular because data can be collected continuously at a relatively low cost. However, representativeness of the data can be ... -
Optimal Ramp Metering Control for Weaving Segments Considering Dynamic Weaving Capacity Estimation
(American Society of Civil Engineers, 2014)On freeway corridors, traffic flow is limited by active bottlenecks. Weaving maneuvers (i.e., intensive lane changes) are a major cause of bottlenecks during high-demand periods. To relieve bottleneck severity, ramp metering ... -
Determination of Mini-Roundabout Capacity in the United States
(American Society of Civil Engineers, 2014)The design of mini-roundabouts has been around and practiced in Europe for decades. It has been a successful and low-cost intersection configuration using existing external boundaries of intersections. Nevertheless, ... -
Model of Potential Crash Rates of Rural Roundabouts with Geometrical Features
(American Society of Civil Engineers, 2014)In recent years, there has been a widespread diffusion of roundabout intersections in the Italian road network; their undoubted popularity is attributable not only to their proven performance in terms of safety but also ... -
Passenger Car and Truck Operating Speed Models on Multilane Highways with Combinations of Horizontal Curves and Steep Grades
(American Society of Civil Engineers, 2014)Operating speed prediction models have been proposed as a candidate method to assess design consistency on highways and streets. A significant number of operating speed prediction models exist for passenger cars on two-lane ... -
Optimization of Ultrasonic Rail-Defect Inspection for Improving Railway Transportation Safety and Efficiency
(American Society of Civil Engineers, 2014)Broken rails are the most frequent cause of freight-train derailments in the United States. Consequently, reducing their occurrence is a high priority for the rail industry and the U.S. Federal Railroad Administration. ... -
Optimization of Speed Hump Profiles Based on Vehicle Dynamic Performance Modeling
(American Society of Civil Engineers, 2014)Speed humps are in widespread use around the world. Despite their effective performance in increasing safety, they cause considerable damage to vehicles and discomfort to drivers and passengers. This paper investigates the ... -
Multiple Stress Creep–Recovery Test of Ethylene Vinyl Acetate and Polyphosphoric Acid-Modified Binder
(American Society of Civil Engineers, 2014)The effect of longer creep and recovery times—from -
Modeling Movement Direction Choice and Collision Avoidance in Agent-Based Model for Pedestrian Flow
(American Society of Civil Engineers, 2015)Agent-based microscopic pedestrian-flow simulation models are promising tools for designers or engineers to evaluate the level of safety or comfort of crowded pedestrian traffic facilities. Existing models tend to simulate ... -
Enhancing Ramp Metering Algorithms with the Use of Probability of Breakdown Models
(American Society of Civil Engineers, 2014)Ramp-metering, which controls the onramp flow into the freeway, is successful in increasing freeway throughput and reducing overall travel-time. The maximum flow allowed from the onramp during ramp-metering is typically ... -
Estimation of Rutting Models by Combining Data from Different Sources
(American Society of Civil Engineers, 2001)The accurate prediction of rutting development is an essential element for the efficient management of pavement systems. The objective of this paper is to demonstrate the effectiveness of the estimation of rutting models ... -
Public Transport Travel-Time Variability Definitions and Monitoring
(American Society of Civil Engineers, 2015)Public transport travel-time variability (PTTV) is essential for understanding the deteriorations in the reliability of travel time, optimizing transit schedules, and route choices. This paper establishes the key definitions ... -
Developing a 24-Hour Large-Scale Microscopic Traffic Simulation Model for the Before-and-After Study of a New Tolled Freeway in the Washington, DC–Baltimore Region
(American Society of Civil Engineers, 2015)For determining highly disaggregate details about traffic dynamics, microscopic traffic simulation has long proven to be a valuable tool for the evaluation of development plans and operation/control strategies. With recent ... -
Design and Evaluation of Operational Strategies for Deploying Emergency Response Teams: Dispatching or Patrolling
(American Society of Civil Engineers, 2014)Both patrolling and prepositioned strategies for allocating emergency traffic response units have been implemented in practice. To compare the performance of both response strategies, this study has conducted an efficiency ... -
New Methodology for Intersection Signal Timing Optimization to Simultaneously Minimize Vehicle and Pedestrian Delays
(American Society of Civil Engineers, 2014)This study introduces a new methodology for signal timing optimization that is carried out by adjusting green splits of a.m. peak, p.m. peak, and rest of the day timing plans for each signalized intersection in the urban ... -
Influence of Pavement Condition on Environmental Costs
(American Society of Civil Engineers, 2014)Pavement conditions significantly influence the generation of nuisances that influence the environment and increase the costs borne by society. This paper presents a new tool designed to monetize and incorporate environmental ... -
Development and Implementation of a Lifecycle Carbon Tool for Highway Maintenance
(American Society of Civil Engineers, 2015)The highway maintenance sector within the United Kingdom consumes considerable amounts of natural resources and accounts for a large amount of carbon emissions. Carbon emissions reduction is now considered an integral part ... -
Operational Advantages of Dynamic Reversible Left-Lane Control of Existing Signalized Diamond Interchanges
(American Society of Civil Engineers, 2015)The signalized diamond interchange is a widely used intersection design for freeway-to-arterial connections. The capacity of these interchanges is largely determined by the number of lanes, the demands of the various ...