Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 2361-2380 of 4147
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Design of Pavements Incorporating Grouted Macadams
(American Society of Civil Engineers, 2008)Grouted macadam, a material that consists of a porous asphalt skeleton with 25–35% voids, filled with a cementitious grout, has traditionally been used as a specialist surfacing with excellent resistance to both deformation ... -
Measurement of Pavement Surface Reflectance for a Balloon Lighting System
(American Society of Civil Engineers, 2008)Nighttime construction offers many advantages to the public and to state agencies. Under these conditions, traffic is minimal and construction operations can be conducted effectively and quickly. In addition, cooler ... -
Development of Fatigue Cracking Prediction Models Using Long-Term Pavement Performance Database
(American Society of Civil Engineers, 2008)This study strives to develop improved fatigue cracking models using the long-term pavement performance database. The prediction accuracy of the existing models was found to be inadequate. Several modern regression techniques ... -
Evaluation of Transition Methods of the 170E and 2070 ATC Traffic Controllers after Emergency Vehicle Preemption
(American Society of Civil Engineers, 2008)Modern traffic signal control systems provide emergency vehicle preemption (EVP) capabilities using advanced sensors and communication technologies. While EVP strategies have been widely implemented by urban transportation ... -
Modeling Speed Behavior of Passenger Cars and Trucks in Freeway Construction Work Zones: Implications on Work Zone Design and Traffic Control Decision Processes
(American Society of Civil Engineers, 2008)Current work zone design and traffic control guidance is based on desirable speed outcomes; knowledge related to actual speed outcomes of design and traffic control decisions is limited. The objective of this research is ... -
Field Experiences with RDD and Overlay Tester for Concrete Pavement Rehabilitation
(American Society of Civil Engineers, 2008)Since reflective cracking is related to both the existing pavement condition and the overlay material, appropriate tools are needed to characterize both properties. The rolling dynamic deflectometer (RDD) was employed to ... -
Performance of Pneumatic Capsule Pipeline Freight Transport System Driven by Linear Motor1
(American Society of Civil Engineers, 2008)There is growing concern over the problems associated with excessive use of trucks to transport freight. Such problems include air and noise pollution, damage to road surfaces, excessive fuel consumption, traffic congestion, ... -
Predicting Moisture-Dependent Resilient Modulus of Cohesive Soils Using Soil Suction Concept
(American Society of Civil Engineers, 2008)The resilient modulus of the materials used in various pavement layers has been used extensively as an important material property in structural design of pavement. The state of stress and moisture content of cohesive soils ... -
Framework of a Time-Based Simulation Model for the Analysis of Airfield Operations
(American Society of Civil Engineers, 2008)This paper presents the framework of a new microscopic simulation model called Virginia Tech airfield simulation model (VTASIM) developed to study aircraft operations at airports. The model presented is designed and built ... -
Development of European End-Treatment TWINY Using Simulation and Crash Testing
(American Society of Civil Engineers, 2008)In this study, a simple guardrail end treatment, called TWINY, designed particularly for use with a thrie-beam guardrail system is developed. In the first phase, the system is designed and analyzed using a versatile, highly ... -
Interpretation of Accelerated Laboratory Testing of the Prototype Modulas Stress in Motion Sensor with the MMLS3 Load Simulator
(American Society of Civil Engineers, 2008)With modern heavy vehicles using higher inflation pressures and higher axle loads the dynamic measurement of the tire-pavement contact force/stress is essential not only for tire development but also in road research for ... -
Speed and Lateral Vehicle Position Models from Controlled Nighttime Driving Experiment
(American Society of Civil Engineers, 2008)Data from a controlled nighttime driving experiment along a complex, two-lane rural highway in Pennsylvania were used to investigate participant speed and lateral vehicle position. Additionally, the association of pavement ... -
Microscopic Traffic Simulation Model-Based Optimization Approach for the Contraflow Lane Configuration Problem
(American Society of Civil Engineers, 2008)This paper addresses the optimal contraflow lane configuration problem arising in the contraflow lane control strategy that has been implemented successfully in practice. The problem is formulated as a bilevel programming ... -
Principal Components Regression of Onboard Sound Intensity Levels
(American Society of Civil Engineers, 2008)Roadways paved with open graded asphalt mixes typically generate lower traffic noise levels as compared to other types of pavements. A program was initiated in 2005 in California to evaluate the effectiveness of noise ... -
Consistency of Video Detection Activation and Deactivation Times between Day and Night Periods
(American Society of Civil Engineers, 2007)Video detection has become an increasingly popular technology for vehicle detection at signalized intersections. Among the potential disadvantages of this technology is the tendency of video detectors to activate early at ... -
Axle Load Distribution for Mechanistic–Empirical Pavement Design
(American Society of Civil Engineers, 2007)Mechanistic–empirical (ME) pavement design often demands default or assumed axle load spectrum data. Using single and tandem axles of the Vehicle Class 9 as examples, this study analyzed the spatial and temporal variations ... -
Modeling and Simulation of Collisions of Heavy Trucks with Concrete Barriers
(American Society of Civil Engineers, 2007)On-site collision tests of full-scale concrete barriers are an important method to understand what happens to concrete barriers when vehicles collide with them. However, such tests require both time and money, so modeling ... -
Rethinking Geometric Design Standards for Bike Paths
(American Society of Civil Engineers, 2007)The “single file” and “side-by-side” travel characteristics of bicyclists and pedestrians should be considered for the determination of stopping sight distances, horizontal sightline offsets, and minimum lengths of vertical ... -
Safety Treatments at Isolated High-Speed Signalized Intersections: Synthesis
(American Society of Civil Engineers, 2007)High-speed intersections pose a safety and operational challenge. Currently, no specific guidance for treating high-speed intersections exists, particularly in the case of intersections with substantial truck traffic. To ... -
Interactive Meshing for the Design and Optimization of Bus Transportation Networks
(American Society of Civil Engineers, 2007)We propose an intelligent tool for terrestrial transportation design based on the underlying concept of adaptive meshing. Vehicle routes are deformable visual patterns which cover the geographic area adapting shapes to ...