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Author : James Allen Bonneson
Publisher :
ISBN 13 :
Total Pages : 482 pages
Book Rating : 4.:/5 (241 download)
Download or read book Operational Characteristics of the Single-point Urban Interchange written by James Allen Bonneson and published by . This book was released on 1990 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michelle J. Smith
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (647 download)
Download or read book Comparison of the Operational and Safety Characteristics of the Single Point Urban Interchange with Those of the Diamond Interchange written by Michelle J. Smith and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicholas J. Garber
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.3/5 (91 download)
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.
Author : Carroll J. Messer
Publisher : Transportation Research Board
ISBN 13 : 9780309048682
Total Pages : 116 pages
Book Rating : 4.0/5 (486 download)
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:
Author :
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (242 download)
Download or read book Design and Operational Features of the Single Point Urban Interchange. Final Report written by and published by . This book was released on 1991 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James A. Bonneson
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.3/5 (555 download)
Download or read book A National Survey of Single-point Urban Interchanges. Interim Report written by James A. Bonneson and published by . This book was released on 1989 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rui Yue
Publisher :
ISBN 13 : 9780355052558
Total Pages : 55 pages
Book Rating : 4.0/5 (525 download)
Download or read book An Evaluation of Operational Efficiency Between Single Point Urban Interchange with Frontage Road and Tight Diamond Interchange written by Rui Yue and published by . This book was released on 2017 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signalized urban interchanges are frequently used as junctions between freeways and local arterials to date. In recent years, many new interchange or intersection designs like Diverging Diamond Interchange (DDI) and Continuous-flow Intersection (CFI) have emerged across the world. However, most of the interchanges are still using conventional urban interchange designs. Among new designs, Single Point Urban Interchange (SPUI) and Tight Diamond Interchange (TDI) are the most popular. Comparison and evaluation of the safety and operation of interchanges are important in transportation engineering to choose the most appropriate option for a location. Recently, many research have been devoted to the standard TDI and SPUI. Most of them consistently prove that the SPUI outperforms TDI in operation efficiency, but few research have compared the SPUI with frontage road (SPUI-F) with TDI. This research aims to fill this gap. With this motivation, there was a real case which could be used as testing the operational efficiency between the TDI and SPUI-F. The Nevada Department of Transportation (NDOT) switched the TDI, which was located at I-580/Plumb Ln, to SPUI-F in 2003. Since this interchange has experienced TDI and SPUI-F, the Measures of Effectiveness (MOEs) for each of them can be compared. To perform this comparison, layouts of both interchanges were modeled in VISSIM. The models were calibrated using the existing volume. Several volume scenario groups were designed for testing the operational efficiency of both options. Three MOEs, including average delay, average speed and average queue length, were selected to show the operational efficiency. The results revealed that the TDI is more efficient in comparison to the SPUI-F. However, TDI might not satisfy the driver’s expectation because of the stopping between the two signals, for which SPUI-F does not have such a problem.
Author :
Publisher :
ISBN 13 :
Total Pages : 101 pages
Book Rating : 4.:/5 (932 download)
Download or read book Single Point Urban Interchange Design and Operations Analysis written by and published by . This book was released on 1991 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. Curtis Herrick
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.3/5 (91 download)
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 : Nicholas J. Garber
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.3/5 (555 download)
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.
Author : Jim C. Lee
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.3/5 (555 download)
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.
Author : Paul B. W. Dorothy
Publisher :
ISBN 13 :
Total Pages : 346 pages
Book Rating : 4.3/5 (129 download)
Download or read book A Microscopic Inspection of the Operational Aspects of Urban Interchanges written by Paul B. W. Dorothy and published by . This book was released on 1997 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : Aashto
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (555 download)
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 :
Publisher :
ISBN 13 :
Total Pages : 670 pages
Book Rating : 4.:/5 (318 download)
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.
Author : Amy J. Rens
Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.:/5 (44 download)
Download or read book An Operational Comparison of High-volume Single Point Urban and Tight Urban Diamond Interchanges Using Transyt-7f and Netsim written by Amy J. Rens and published by . This book was released on 1999 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : AASHTO
ISBN 13 : 1560510412
Total Pages : 133 pages
Book Rating : 4.5/5 (65 download)
Download or read book Highway Safety Design and Operations Guide, 1997 written by and published by AASHTO. This book was released on 1997 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: A replacement to the publication entitled 'Highway design and operational practices related to highway safety', also known as 'The Yellow Book', and most recently published in 1974.
Author :
Publisher : AASHTO
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4./5 ( download)
Download or read book Highway Safety Design and Operations Guide, 3rd Edition written by and published by AASHTO. This book was released on with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
