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Development And Evaluation Of Operational Strategies For Providing An Integrated Diamond Interchange Ramp Metering Control System
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Book Synopsis Development and Evaluation of Operational Strategies for Providing an Integrated Diamond Interchange Ramp-metering Control System by : Zongzhong Tian
Download or read book Development and Evaluation of Operational Strategies for Providing an Integrated Diamond Interchange Ramp-metering Control System written by Zongzhong Tian and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond interchanges and their associated ramps are where the surface street arterial system and the freeway system interface. Historically, these two elements of the system have been operated with little or no coordination between the two. Therefore, there is a lack of both analysis tools and operational strategies for considering them as an integrated system. One drawback of operating the ramp-metering system and the diamond interchange system in isolation is that traffic from the ramp, particularly if it is metered, can spill back into the diamond interchange, causing both congestion and safety concerns at the diamond interchange. While flushing the ramp queues by temporarily suspending ramp metering has been the primary strategy for preventing queue spillback, it can result in freeway system breakdown, which would affect the entire system's efficiency. The aim of this research was to develop operational strategies for managing an integrated diamond interchange ramp-metering system (IDIRMS). Enhanced modeling methodologies were developed for an IDIRMS. A computer model named DRIVE (Diamond Interchange and Ramp Metering Integration Via Evaluation) was developed, which was characterized as a mesoscopic simulation and analysis model. DRIVE incorporated the enhanced modeling methodologies developed in this study and could be used to perform system analysis for an IDIRMS given a set of system input parameters and variables. DRIVE was validated against a VISSIM microscopic simulation model, and general agreement was found between the two models. System operational characteristics were investigated using DRIVE to gain a better understanding of the system features. Integrated control strategies (ICS) were developed based on the two commonly used diamond interchange phasing schemes, basic three-phase and TTI four-phase. The ICS were evaluated using VISSIM microscopic simulation under three general traffic demand scenarios: low, medium, and high, as characterized by the volume-to-capacity ratios at the metered ramps. The results of the evaluation indicate that the integrated operations through an adaptive signal control system were most effective under the medium traffic demand scenario by preventing or delaying the onset of ramp-metering queue flush, thereby minimizing freeway breakdown and system delays.
Book Synopsis Development and Evaluation of a Framework for Selecting Operational Strategies for an Integrated Diamond Interchange by : Zongzhong Tian
Download or read book Development and Evaluation of a Framework for Selecting Operational Strategies for an Integrated Diamond Interchange written by Zongzhong Tian and published by . This book was released on 2004 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Model for Evaluating Integration Strategies for Operating Diamond Interchange and Ramp Metering by : Zongzhong Tian
Download or read book A Model for Evaluating Integration Strategies for Operating Diamond Interchange and Ramp Metering written by Zongzhong Tian and published by . This book was released on 2003 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strategies for Improving Traffic Operations at Oversaturated Diamond Interchanges by : G. Curtis Herrick
Download or read book Strategies for Improving Traffic Operations at Oversaturated Diamond Interchanges written by G. Curtis Herrick and published by . This book was released on 1992 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Federal Highway Administration. Implementation Division Publisher : ISBN 13 : Total Pages :184 pages Book Rating :4.3/5 (91 download)
Book Synopsis Control Strategies for Signalized Diamond Interchanges by : United States. Federal Highway Administration. Implementation Division
Download or read book Control Strategies for Signalized Diamond Interchanges written by United States. Federal Highway Administration. Implementation Division and published by . This book was released on 1978 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparative study of 5 signal timing control methods indicated that the most efficient method of signal control is the micrioprocessor which would allow an intersection to operate under actuated control during certain periods of the day and under predetermined timing patterns during other periods. The 5 signal timing methods considered were: Traffic Engineering Method, FHWA Design Manual Method, Fully Actuated Operation Method, Microprocessor with lagging Left-Turn Method, and Microprocessor with Leading Left-Turn Method. The "before" and "after" evaluation of these methods was made by pairing them in a series of six comparisons using time-lapse photography to supply vehicle data. The site selected for application of these comparisons was the Diamond Interchange of Interstate 95 Golfair Boulevard in Jacksonville, Florida. The study procedure is appropriate for signal timing studies made at: a diamond interchange, other interchange configurations with a ramp terminal and nearby signalized intersections, and a 2-way major street intersected by one or more one-way street pairs.
Book Synopsis Freeway Operations and Traffic Signal Systems, 2004 by : National Research Council (U.S.). Transportation Research Board
Download or read book Freeway Operations and Traffic Signal Systems, 2004 written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 2004 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB?s Transportation Research Record: Journal of the Transportation Research Board 1867 examines several algorithms that estimate speed from traffic surveillance cameras in a variety of traffic, weather, and lighting conditions; identify bottleneck locations, the active times, and the delays that are caused; and are applied to the archived loop detector data in the I-4 data warehouse.
Download or read book Transportation Research Record written by and published by . This book was released on 1974 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ramp Metering Algorithms and Approaches for Texas by :
Download or read book Ramp Metering Algorithms and Approaches for Texas written by and published by . This book was released on 2004 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this project was to compare ramp metering algorithms and develop guidelines for improving ramp metering operations in Texas. As part of this research project, researchers collected data at several sites in Houston, Texas. Data analysis showed that many congested freeways are facing heavy ramp demand, and require significant changes in existing ramp metering operations if ramp metering continues to be used as part of freeway traffic management. Furthermore, researchers used computer simulation to compare the effectiveness of ALINEA with queue flush with the existing strategy of metering at the maximum rate with queue flushing. Researchers found that ALINEA does not provide any benefits when queue flushing is permitted. Under heavy demand conditions such as those in Houston, the current strategy to meter at the fastest rate remains the most beneficial. However, this strategy also provides limited benefits. Finally, researchers developed guidelines and recommendations for current and future ramp metering operations in Texas. This report documents the research results.
Book Synopsis Control Strategies for Signalized Diamond Interchanges by : Joseph W. Guyton
Download or read book Control Strategies for Signalized Diamond Interchanges written by Joseph W. Guyton and published by . This book was released on 1978 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integrated Arterial and Freeway Operation Control Strategies for IVHS Advanced Traffic Management Systems by :
Download or read book Integrated Arterial and Freeway Operation Control Strategies for IVHS Advanced Traffic Management Systems written by and published by . This book was released on 1998 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of this study is congestion, primarily that occurring on freeway corridors in metropolitan areas. Lack of coordination in the operation of various components of the system is often a major source of inefficiency, resulting in greater delays to motorists than what might be achievable with the existing physical infrastructure. The main objective of the study is to improve corridor network management by coordinating the various control elements in a freeway corridor, for both recurrent and nonrecurrent congestion situations.
Book Synopsis Coordination of Freeway Ramp Meters and Arterial Traffic Signals Field Operational Test (FOT) by : Xiao-Yun Lu
Download or read book Coordination of Freeway Ramp Meters and Arterial Traffic Signals Field Operational Test (FOT) written by Xiao-Yun Lu and published by . This book was released on 2013 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Evaluation of Feedback-based Freeway Ramp Metering Strategies by : Ilgin Yasar
Download or read book Development and Evaluation of Feedback-based Freeway Ramp Metering Strategies written by Ilgin Yasar and published by . This book was released on 2006 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Evaluation of a Ramp Metering System on the Lodge Freeway by : Joseph A. Wattleworth
Download or read book Development and Evaluation of a Ramp Metering System on the Lodge Freeway written by Joseph A. Wattleworth and published by . This book was released on 1967 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of the Effectiveness of Ramp Metering Operations by : Allen R. Cook
Download or read book Evaluation of the Effectiveness of Ramp Metering Operations written by Allen R. Cook and published by . This book was released on 1970 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Freeway System Ramp Metering Strategies for Texas by : Carroll J. Messer
Download or read book Advanced Freeway System Ramp Metering Strategies for Texas written by Carroll J. Messer and published by . This book was released on 1993 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freeway ramp metering systems have been used to improve urban freeway flow. However, control strategies must be properly adjusted to account for ramp queues overflowing onto surface streets and provide equitable on-ramp control during various operating periods. An improved solution can be obtained by optimizing this problem simultaneously for a group of time slices. This study identifies and examines a microcomputer-based optimization scheme that can assist in developing efficient freeway control strategies for on-line freeway surveillance and control. A multi-level freeway control structure is employed for which ramp metering control algorithms are developed for each level of control. Flow-based and lane occupancy-based system algorithms are presented. Detailed data file requirements are provided for each control level. A microcomputer prototype, or laboratory test version of the system level, will be described in a companion project report.
Book Synopsis Feedback Ramp Metering in Intelligent Transportation Systems by : Pushkin Kachroo
Download or read book Feedback Ramp Metering in Intelligent Transportation Systems written by Pushkin Kachroo and published by Springer Science & Business Media. This book was released on 2011-06-27 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Feedback Ramp Metering in Intelligent Transportation Systems is the first book on the topic of using feedback control (also called real-time traffic control or adaptive control by some traffic engineers) in ramp metering. It provides traffic theory fundamentals and then the design of feedback controllers for isolated and coordinated ramp metering problems. Software simulation code in Matlab and Paramics is provided in the book so that the reader can get a hands-on feel for the various algorithms. With a large number of examples, illustrations, and original problems, this book is excellent as a textbook or reference book for a senior or graduate level course on the subject, as well as a reference for researchers in related fields.
