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Alternative Intersection Design And Selection
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Book Synopsis Alternative Intersection Design and Selection by : Henry Brown (Engineer)
Download or read book Alternative Intersection Design and Selection written by Henry Brown (Engineer) and published by . This book was released on 2020 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: State departments of transportation often encounter public resistance to alternative intersections, with 86% of respondents in a new survey of state DOTs agreeing or strongly agreeing that public resistance hinders their implementation. Public resistance can vary among projects based on intersection type and whether the project was initiated at the local or state level. The TRB National Cooperative Highway Research Program's NCHRP Synthesis 550: Alternative Intersection Design and Selection documents the evaluation and selection processes within state departments of transportation (DOTs) for intersection projects. Roundabouts are the most widely implemented type of alternative intersection. Ninety percent of state DOTs that responded to the synthesis survey reported having at least one roundabout in their jurisdiction open and operational. Roundabouts also had the highest reported number of facilities in project development as 88% of respondents indicated there was at least one roundabout under development at their DOT.
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 Safety and Operational Impacts of Alternative Intersections by : Andrew P. Tarko
Download or read book Safety and Operational Impacts of Alternative Intersections written by Andrew P. Tarko and published by Purdue University Press. This book was released on 2008-09-01 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the degradation of service at some conventional intersections increases, there becomes a need for alternative solutions other than expensive interchanges. Under certain traffic and local conditions some alternative intersections are more promising than other solutions. In some cases, the conventional intersection may still be the optimal choice. The presented research focused on developing guidelines that would help planners and designers identify the most promising solutions for further analysis. Although a large number of sources could be found on the research subject, the existing knowledge about performance of alternative intersection design is incomplete. Only a few designs proposed in the past have been applied at a considerable number of locations; other types still await implementation. The available sources are not comprehensive and deal with conditions that might be different from Indiana. The knowledge of the safety impact of these intersections is very limited. A large number of more than 1,300 scenarios were simulated runs performed with VISSIM calibrated to Indiana conditions. The simulated types of intersections included: conventional, roundabouts, jag-handle near-sided and far-sided, median U-turns, and continuous-flow intersection. Except roundabouts, all intersections were signalized to test their capacity limits and delay-based performance. The presented research developed guidelines for using alternative intersection designs. The guidelines compile the existing knowledge found in existing publications and research reports with the simulation experiments performed with VISSIM. The guidelines are ready to use and will help planners and designers determine which intersection types are the most promising under considered conditions and should be considered in a detailed way.
Book Synopsis Roundabouts by : Lee August Rodegerdts
Download or read book Roundabouts written by Lee August Rodegerdts and published by Transportation Research Board. This book was released on 2010 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 672: Roundabouts: An Informational Guide - Second Edition explores the planning, design, construction, maintenance, and operation of roundabouts. The report also addresses issues that may be useful in helping to explain the trade-offs associated with roundabouts. This report updates the U.S. Federal Highway Administration's Roundabouts: An Informational Guide, based on experience gained in the United States since that guide was published in 2000.
Book Synopsis Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges by :
Download or read book Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges written by and published by . This book was released on 2020 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alternative Intersections and Interchanges (A.I.I.s) are designs that improve operations and safety for motorized traffic by strategically adjusting the geometric features at a given location, working on the general principle of redistributing motor vehicle demand at an intersection in an attempt to limit the need to add capacity with new lanes to improve traffic flow. The TRB National Cooperative Highway Research Program's NCHRP Research Report 948: Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges provides specific guidance for four common A.I.I.s: Diverging Diamond Interchange (DDI), Restricted Crossing U-Turn (RCUT), Median U-Turn (MUT), and Displaced Left-Turn (DLT). These designs may involve reversing traffic lanes from their traditional directions, which may introduce confusion and create safety issues for pedestrians and bicyclists. In addition, pedestrian paths and bicycle facilities may cross through islands or take different routes than expected. These new designs are likely to require additional information for drivers, bicyclists, and pedestrians as well as better accommodations for pedestrians and bicyclists, including pedestrians with disabilities.
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 Alternative Intersections/interchanges by : Warren Edward Hughes
Download or read book Alternative Intersections/interchanges written by Warren Edward Hughes and published by . This book was released on 2010 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transportation professionals today are challenged to meet the mobility needs of an increasing population with limited resources. At many highway junctions, congestion continues to worsen. Drivers, pedestrians, and bicyclists experience longer delays and greater exposure to risk. Current traffic and safety problems are more complex and complicated. Conventional intersection/interchange designs are sometimes found to be insufficient to mitigate transportation problems. Consequently, many engineers are investigating and implementing innovative treatments in an attempt to think outside the box. This report covers four intersection designs and two interchange designs that may offer additional benefits compared to conventional at grade intersections and grade separated diamond interchanges. The six alternative treatments covered in this report are displaced left turn (DLT) intersections, restricted crossing U turn (RCUT) intersections, median U turn (MUT) intersections, quadrant roadway (QR) intersections, double crossover diamond (DCD) interchanges, and DLT interchanges. The information presented in this report provides knowledge of each of the six alternative treatments including salient geometric design features, operational and safety issues, access management issues, costs, and construction sequencing and applicability.
Book Synopsis Median Intersection Design by : Douglas W. Harwood
Download or read book Median Intersection Design written by Douglas W. Harwood and published by Transportation Research Board. This book was released on 1995 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for the Selection of an Interchange Configuration, Final Report by : Thomas Mulinazzi
Download or read book Guidelines for the Selection of an Interchange Configuration, Final Report written by Thomas Mulinazzi and published by . This book was released on 1973 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Non-traditional, High-volume Intersection Design by : Caroline M. Kone
Download or read book Analysis of Non-traditional, High-volume Intersection Design written by Caroline M. Kone and published by . This book was released on 2007 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unconventional intersection designs have been used in an effort to reduce delay and congestion at signalized intersections. The objective of identifying intersection designs that optimize throughput and an analysis of the designs based upon cost, level of service, capacity, and operation would provide a comparison of alternative intersection treatments available for possible use in North Carolina. Existing literature revealed some comparisons of unconventional intersection design as well as evaluations for median and left-turn lane treatments. Using a SYNCHRO analysis to determine the level of service (LOS), eight unconventional intersection types were compared using a conventional signalized intersection as a base design. The same analysis was performed for six intersections in North Carolina that met criteria for consideration. Construction costs were estimated for each intersection type and compared to intersections in North Carolina. All of the North Carolina intersections were recommended for unconventional intersection design retrofit including the Center-Turn Overpass, the Median U-turn, the Michigan Diamond, and the Quadrant. Others considered were the Echelon, the Continuous Flow, and the Single Point Urban Interchange. The Tight Diamond intersection type was removed from research due to an unexplained flaw in the modeling. Future research may lead to case studies of intersections that have already been retrofitted with the non-traditional intersection types.
Book Synopsis Design Guidance for Intersection Auxiliary Lanes by : Kay Fitzpatrick
Download or read book Design Guidance for Intersection Auxiliary Lanes written by Kay Fitzpatrick and published by . This book was released on 2014 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 780: Design Guidance For Intersection Auxiliary Lanes expands on guidance provided in A Policy on Geometric Design of Highways and Streets (the Green Book), published by the American Association of State Highway and Transportation Officials (AASHTO). This report highlights information regarding bypass lanes, channelized right-turn lanes, deceleration and taper length, design and capacity of multiple left-turn lanes, and alternative intersection designs."--Publisher description.
Author :National Association of City Transportation Officials Publisher :Island Press ISBN 13 :1610915658 Total Pages :258 pages Book Rating :4.6/5 (19 download)
Book Synopsis Urban Bikeway Design Guide, Second Edition by : National Association of City Transportation Officials
Download or read book Urban Bikeway Design Guide, Second Edition written by National Association of City Transportation Officials and published by Island Press. This book was released on 2014-03-24 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: NACTO's Urban Bikeway Design Guide quickly emerged as the preeminent resource for designing safe, protected bikeways in cities across the United States. It has been completely re-designed with an even more accessible layout. The Guide offers updated graphic profiles for all of its bicycle facilities, a subsection on bicycle boulevard planning and design, and a survey of materials used for green color in bikeways. The Guide continues to build upon the fast-changing state of the practice at the local level. It responds to and accelerates innovative street design and practice around the nation.
Download or read book Tampa Rail Project written by and published by . This book was released on 2002 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Advances in Transportation Systems Engineering and Management—Volume 1 by : K. V. R. Ravi Shankar
Download or read book Recent Advances in Transportation Systems Engineering and Management—Volume 1 written by K. V. R. Ravi Shankar and published by Springer Nature. This book was released on with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Alternative Diamond Interchange Forms by : Afia Sultana
Download or read book Performance of Alternative Diamond Interchange Forms written by Afia Sultana and published by . This book was released on 2017-10-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Service interchanges connect freeways to arterial roads and are the backbone of the U.S. road network. Improving the operations of service interchanges is possible by applying one of several new solutions: diverging diamond, single point interchanges, and double or single roundabout diamonds.VISSIM was used to perform 13,500 experiments to simulate the traffic performance of the studied alternative interchanges during a typical day for a wide range of geometry and traffic scenarios. Five performance measures were investigated: daily-average delay, level of service of critical movement, daily-average number of stops, longest off-ramp queue, and longest crossing road queue. The obtained daily-average delays at the alternative interchanges were consistent with expectations. Roundabouts had the highest average delay while single-point interchanges had the lowest average delays. Roundabouts exhibited the lowest numbers of stops among all the alternatives in the low traffic range up to non-freeway 30,000 veh/day. Diverging diamonds tended to have the shortest and roundabouts tended to have the longest queues on their off-ramps. Overall, single-point interchanges had the shortest queues among all the alternatives.The study developed guidelines for early stage screening of alternative diamond. The guidelines exhibit performance measures for 25 traffic and geometric scenarios and a wide range of traffic volumes. The guidelines provide a fair comparison procedure for alternative diamond interchanges in the preliminary planning and conceptual design stages.
Download or read book Elizabeth Brady Road Extension written by and published by . This book was released on 2009 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Innovative Alternative Intersection Designs in the Development of Safety Performance Functions and Crash Modifications Factors by :
Download or read book Evaluation of Innovative Alternative Intersection Designs in the Development of Safety Performance Functions and Crash Modifications Factors written by and published by . This book was released on 2019 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to alleviate saftey and congestion problems, several types of intersections have been suggested and implemented in some states. This report aims to evaluate the alternative intersections that have been implemented in other states and predict their effects when they are implemented in Florida.
