Now showing items 1741-1760 of 4147

    • Drivers’ Lane Utilization for United Kingdom Motorways 

      Saad Yousif; Jalal Al-Obaedi; Ralph Henson (American Society of Civil Engineers, 2013)
      Lane utilization represents how the rate of traffic flow is distributed among the available number of lanes in a given section. This utilization or split is affected by several factors, including traffic flow rates and the ...
    • Simulation-Based Evaluation of Traffic Sign Retroreflectivity Maintenance Practices 

      Joseph E. Hummer; Elizabeth A. Harris; William Rasdorf (American Society of Civil Engineers, 2013)
      A new highway sign minimum retroreflectivity standard issued by the Federal Highway Administration (FHWA) is compelling agencies to evaluate how to comply while remaining within their budgets. This paper presents the results ...
    • Development of a Missing Post Repair Guideline for Longitudinal Barrier Crash Safety 

      Carolyn E. Hampton; Hampton C. Gabler (American Society of Civil Engineers, 2013)
      Crash test procedures for modified steel strong-post w-beam guardrail are described in various U.S. Government reports. However, these tests are always performed on new guardrail installations. The performance of guardrail ...
    • Driver Response to an Actuated Advance Warning System 

      Justice Appiah; Laurence R. Rilett; Bhaven Naik; Remigiusz Wojtal (American Society of Civil Engineers, 2013)
      This paper analyzes driver behavior when alerted to the impending end of green while they travel on high-speed signalized intersection approaches that are equipped with actuated advance warning (AAW) systems. These systems ...
    • Study of Modal Shifts to Bus Rapid Transit in Chinese Cities 

      Yuanqing Wang; Zhicheng Wang; Zongzhi Li; Samuel R. Staley; Adrian T. Moore; Yanan Gao (American Society of Civil Engineers, 2013)
      This paper applies a binary logistic analysis method for assessing impacts of modal shifts from automobiles, normal buses, and nonmotorized vehicles caused by bus rapid transit (BRT) deployments using survey data collected ...
    • Approximate Solution Procedure for Dynamic Traffic Assignment 

      Anna C. Y. Li; Linda Nozick; Rachel Davidson; Nathanael Brown; Dean A. Jones; Brian Wolshon (American Society of Civil Engineers, 2013)
      This paper proposes an approximate dynamic traffic assignment algorithm for the analysis of traffic conditions in large-scale road networks over several days. The time-dependent origin-destination trips are assumed to be ...
    • Interchange Complexity Model and Related Safety Implications 

      Reut Sadia; Abishai Polus (American Society of Civil Engineers, 2013)
      Freeway interchanges accommodate large traffic volumes within a constrained area. When their design is complex and includes unexpected features, it may increase drivers’ workloads and lead to driving errors, thus increasing ...
    • Proportion-Based and Tendency-Based Bus Trajectory Prediction Models 

      Guojun Chen; Xuemei Zhou; Dong Zhang; Xiaoguang Yang (American Society of Civil Engineers, 2013)
      At the terminal station, the path headway bias of a trip is linearly correlated to the travel time of the path when it is beyond a critical range, which marks the tendency between successive trips. A tendency-based model ...
    • Crowdedness Classification Method for Island Platform in Metro Station 

      Jiaorong Wu; Shan Ma (American Society of Civil Engineers, 2013)
      For safety and energy reasons, most metro stations in China choose to install platform screen doors (PSDs), which make passengers not distribute evenly on the platform, but instead gather into clusters in front of screen ...
    • Effective Timing for Two Sequential Applications of Slurry Seal on Asphalt Pavement 

      Elie Y. Hajj; Luis G. Loria; Peter E. Sebaaly; Edward Cortez; Scott Gibson (American Society of Civil Engineers, 2013)
      This study evaluated the field performance of asphalt pavements with two sequential slurry seal applications, developed performance models for asphalt pavements without slurry seals and asphalt pavements receiving slurry ...
    • Effects of Two-Wheelers on Saturation Flow at Signalized Intersections in Developing Countries 

      C. S. Anusha; Ashish Verma; G. Kavitha (American Society of Civil Engineers, 2013)
      Two-wheelers (TW) constitute a major proportion of urban traffic in developing countries and therefore their effect on the saturation flow at signalized intersections could be substantial. This paper attempts to study and ...
    • Relationship between Pavement Roughness and Distress Parameters for Indian Highways 

      Satish Chandra; Chalumuri Ravi Sekhar; Anish Kumar Bharti; B. Kangadurai (American Society of Civil Engineers, 2013)
      The present study demonstrates the relationships between pavement roughness and distress parameters like potholes, raveling, rut depth, cracked areas, and patch work. The pavement distress data collected on four national ...
    • Lane Choice Model for Signalized Intersections with an Auxiliary Through Lane 

      Zachary Bugg; Nagui M. Rouphail; Bastian Schroeder (American Society of Civil Engineers, 2013)
      An auxiliary through lane (ATL) is a commonly used congestion relief measure at signalized intersections in which fiscal and right-of-way constraints do not allow for full widening between intersections. Previously developed ...
    • FreewayConomics: Design and Benefit-Cost Analysis of Bus-Only Shoulder Express Service 

      Craig Shankwitz (American Society of Civil Engineers, 2013)
      Bus-only shoulders (BOS), which allow transit buses to bypass congested freeways and arterials during rush hours, are a key cog in the ground transportation machine in the Twin Cities metropolitan area. In the Twin Cities, ...
    • Maximizing the Traffic Throughput of Turn Bays at a Signalized Intersection Approach 

      Zhuofei Li; Lily Elefteriadou (American Society of Civil Engineers, 2013)
      This paper proposes a method to maximize the throughput of a single-lane approach with a branched configuration (one-lane arterial with multiple turn bays at the intersection approach). Field observations determined that, ...
    • Calculation of Shrinkage Stress in Early-Age Concrete Pavements. I: Calculation of Shrinkage Strain 

      Jun Zhang; Dongwei Hou; Yuan Gao (American Society of Civil Engineers, 2013)
      This paper focuses on modeling of the distribution of shrinkage strain in early-age concrete pavements. In the modeling, an integrative model for autogenous and drying shrinkage predictions of concrete at an early age is ...
    • Climate Change Adaptation Tool for Transportation: Mid-Atlantic Region Case Study 

      Michelle R. Oswald; Sue McNeil (American Society of Civil Engineers, 2013)
      Transportation has contributed to climate change and will most likely be impacted by changes in sea level, temperature, precipitation, and wind, for example. As the risk of climate change impacts become more imminent, ...
    • Left-Turn Prohibition and Partial Grade Separation for Signalized Intersections: Planning-Level Assessment 

      Xin Alyx Yu; Panos D. Prevedouros (American Society of Civil Engineers, 2013)
      Recurring congestion at signalized intersections is caused by the inability of traffic signal controls to serve demand even in cities where advanced traffic signal timing and management systems are in operation. Left-turn ...
    • Numerical Modeling of Load and Stress on the Contact Surface of a Turnout and a Railway Vehicle 

      Krzysztof Aniołek; Jerzy Herian (American Society of Civil Engineers, 2013)
      In operating conditions, railroads are subject to abrasive and fatigue wear. Their durability period depends on the properties of the materials from which rail sections are made, the characteristics and value of the load, ...
    • Process Comparison of Hours of Service Recording for Commercial Vehicle Operations: Electronic versus Paper 

      Kelly Pitera; Linda Ng Boyle; Anne Goodchild (American Society of Civil Engineers, 2013)
      Technology provides the capability to automate the collection of commercial vehicle drivers’ hours of service (HOS), and this can potentially lead to fewer errors. This study compares the use of paper-based and automated ...