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Comparison Of The Operational And Safety Characteristics Of The Single Point Urban And Diamond Interchanges
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Book Synopsis Comparison of the Operational and Safety Characteristics of the Single Point Urban and Diamond Interchanges by : Nicholas J. Garber
Download or read book Comparison of the Operational and Safety Characteristics of the Single Point Urban and Diamond Interchanges written by Nicholas J. Garber and published by . This book was released on 1996 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to evaluate and compare the safety and operational characteristics of the single point urban interchange (SPUI) and the diamond interchange (DI) and develop guidelines that identify traffic and/or geometric conditions that favor one type of interchange over the other. State traffic engineers across the country were surveyed as to their experiences and opinions of the two types of interchanges in terms of operational performance and safety. Accident and operational data were also obtained for nine SPUIs and eight DIs. The interchange operations were studied using both field data and the computer simulation program TRAF-NETSIM. In addition, for each DI simulated, an SPUI counterpart was designed with the same geometric and traffic conditions for further comparison. No significant differences were found in the off-ramp, cross road, and overall interchange average delay. Ten volume scenarios were then developed and simulated for both interchanges at low- and high-volume conditions to analyze the effect of various traffic patterns on the relative operational performance of each interchange type. The accident data for the SPUIs and DIs were compared according to severity, collision type, and location on the interchange. No significant differences were found between the severity distribution and rates of the two interchange types. However, the proportion of on-ramp and off-ramp accidents was greater at the SPUI, and the proportion of accidents occurring in the center of the signalized intersection was greater at the DI. The proportion of angle accidents was greater at DIs than at SPUIs, whereas the proportions of rearend on-ramp, sideswipe, and fixed object accidents were greater at SPUIs. Vehicle conflicts at four interchanges in Virginia were also investigated and used along with the accident analysis results. The operational results, safety analyses, literature review, and survey of state engineers were used to develop guidelines to aid traffic engineers in the selection and design of the appropriate interchange type.
Book Synopsis Single Point Urban Interchange Design and Operations Analysis by : Carroll J. Messer
Download or read book Single Point Urban Interchange Design and Operations Analysis written by Carroll J. Messer and published by Transportation Research Board. This book was released on 1991 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 1974 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Operational Efficiencies, Cost, and Accident Experience of Four Phase Single Point Urban Interchanges by : Jim C. Lee
Download or read book Evaluation of Operational Efficiencies, Cost, and Accident Experience of Four Phase Single Point Urban Interchanges written by Jim C. Lee and published by . This book was released on 2002 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research compares two interchange types, the Tight Urban Diamond Interchange (TUDI) and the Four Phase Single Point Urban Interchange (40SPUI). The 40SPUI is referred to in this report as a Single Point Urban Interchange with Frontage Roads (SPUI/F). The objectives of this research were to: (1) evaluate the SPUI/F based on available accident data and conflict analysis techniques, right-of-way and construction costs, and operating efficiency; (2) compare the performance of the SPUI/F and the TUDI; (3) evaluate current SPUI/F design assumptions and operation and recommend design and/or operational changes to enhance performance; and (4) evaluate the interchange form selection (pre-design) process and recommend changes where appropriate. The research found no significant difference in the safety aspects of the two interchange types. The SPUI/F generally did not perform as well operationally as the TUDI, with increased SPUI/F delay as the distance between frontage roads increased.
Book Synopsis Operational Effects of Geometrics 2003 by : National Research Council (U.S.). Transportation Research Board
Download or read book Operational Effects of Geometrics 2003 written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 2003 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Policy on Design Standards--interstate System by :
Download or read book A Policy on Design Standards--interstate System written by and published by Aashto. This book was released on 2005 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Association of State Highway and Transportation Officials Publisher :AASHTO ISBN 13 :156051325X Total Pages :134 pages Book Rating :4.5/5 (65 download)
Book Synopsis Roadway Lighting Design Guide by : American Association of State Highway and Transportation Officials
Download or read book Roadway Lighting Design Guide written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 2005 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide replaces the 1984 publication entitled An Informational Guide for Roadway Lighting. It has been revised and brought up to date to reflect current practices in roadway lighting. The guide provides a general overview of lighting systems from the point of view of the transportation departments and recommends minimum levels of quality. The guide incorporates the illuminance and luminance design methods, but does not include the small target visibility (STV) method.
Book Synopsis Guidelines for Preliminary Selection of the Optimum Interchange Type for a Specific Location by : Nicholas J. Garber
Download or read book Guidelines for Preliminary Selection of the Optimum Interchange Type for a Specific Location written by Nicholas J. Garber and published by . This book was released on 1999 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Virginia, when new construction or major reconstruction is planned, the current practice is for a location and design engineer to select the interchange type for a given location. The engineer relies upon projected traffic data, right-of-way needs, environmental concerns, safety, and project costs to determine which interchange configuration will most efficiently serve the needs of a certain area. The purpose of this study was to develop guidelines to aid designers in the preliminary selection of the optimum interchange type at a location. This study will provide engineers a starting point to begin their analyses. It is hoped that the development of these guidelines will result in reduced costs, improved levels of service, and increased uniformity. A number of sources were used to develop the guidelines. A literature and a nationwide survey of state engineers helped determine current methods for interchange selection. These surveys also assisted in determining the relative advantages and disadvantages of the various interchange types. Also, 10 interchanges throughout Virginia were studied in order to find their operational and safety characteristics. Extensive computer simulations of the interchange types were performed in order to determine traffic characteristics that affected operations at the interchanges. Based on all of these sources, some general guidelines for preliminary interchange type selection were created.
Download or read book Virginia State Documents written by and published by . This book was released on 2005 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulation Modelling Practice and Theory by : Evon Abu-Taieh
Download or read book Simulation Modelling Practice and Theory written by Evon Abu-Taieh and published by . This book was released on 2019-02 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Geometric Design Research for Improved Safety and Operations by : Kay Fitzpatrick
Download or read book Recent Geometric Design Research for Improved Safety and Operations written by Kay Fitzpatrick and published by . This book was released on 2001 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 299: Recent Geometric Design Research for Improved Safety and Operations reviews and summarizes selected geometric design research published during the 1990s, particularly research with improved safety and operations implication.
Book Synopsis Traffic Control Systems Handbook by :
Download or read book Traffic Control Systems Handbook written by and published by . This book was released on 1976 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook, which was developed in recognition of the need for the compilation and dissemination of information on advanced traffic control systems, presents the basic principles for the planning, design, and implementation of such systems for urban streets and freeways. The presentation concept and organization of this handbook is developed from the viewpoint of systems engineering. Traffic control studies are described, and traffic control and surveillance concepts are reviewed. Hardware components are outlined, and computer concepts, and communication concepts are stated. Local and central controllers are described, as well as display, television and driver information systems. Available systems technology and candidate system definition, evaluation and implementation are also covered. The management of traffic control systems is discussed.
Book Synopsis Intersection and Interchange Design by : National Research Council (U.S.). Transportation Research Board
Download or read book Intersection and Interchange Design written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 1993 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Southeast Corridor Project, Denver by :
Download or read book Southeast Corridor Project, Denver written by and published by . This book was released on 1999 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Handbook of Road Safety Measures by : Rune Elvik
Download or read book The Handbook of Road Safety Measures written by Rune Elvik and published by Emerald Group Publishing. This book was released on 2009-10-14 with total page 1137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains summaries of the knowledge regarding the effects of 128 road safety measures. This title covers various areas of road safety including: traffic control; vehicle inspection; driver training; publicity campaigns; police enforcement; and, general policy instruments. It also covers topics such as post-accident care, and speed cameras.
Book Synopsis An Evaluation of the Michigan Urban Diamond Interchange with Respect to the Single-point Urban Interchange by : Paul B. W. Dorothy
Download or read book An Evaluation of the Michigan Urban Diamond Interchange with Respect to the Single-point Urban Interchange written by Paul B. W. Dorothy and published by . This book was released on 1997 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis I-15 Corridor and Local Arterial Improvements by :
Download or read book I-15 Corridor and Local Arterial Improvements written by and published by . This book was released on 2010 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
