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Roundabout Planning, Design, and Operations Manual
Roundabout Planning, Design, and Operations Manual December 2015 Alabama Department of Transportation ROUNDABOUT PLANNING, DESIGN, AND OPERATIONS MANUAL December 2015 Prepared by: The University Transportation Center for of Alabama Steven L. Jones, Ph.D. Abdulai Abdul Majeed Steering Committee Tim Barnett, P.E., ALDOT Office of Safety Operations Stuart Manson, P.E., ALDOT Office of Safety Operations Sonya Baker, ALDOT Office of Safety Operations Stacey Glass, P.E., ALDOT Maintenance Stan Biddick, ALDOT Design Bryan Fair, ALDOT Planning Steve Walker, P.E., ALDOT R.O.W. Vince Calametti, P.E., ALDOT 9th Division James Brown, P.E., ALDOT 2nd Division James Foster, P.E., Mobile County Clint Andrews, Federal Highway Administration Blair Perry, P.E., Gresham Smith & Partners Howard McCulloch, P.E., NE Roundabouts DISCLAIMER This manual provides guidelines and recommended practices for planning and designing roundabouts in the State of Alabama. This manual cannot address or anticipate all possible field conditions that will affect a roundabout design. It remains the ultimate responsibility of the design engineer to ensure that a design is appropriate for prevailing traffic and field conditions. TABLE OF CONTENTS 1. Introduction 1.1. Purpose ...................................................................................................... 1-5 1.2. Scope and Organization ............................................................................... 1-7 1.3. Limitations ................................................................................................... -
Continuous Flow Intersection, Parallel Flow Intersection, and Upstream Signalized Crossover
Comparison of Three Unconventional Arterial Intersection Designs: Continuous Flow Intersection, Parallel Flow Intersection, and Upstream Signalized Crossover Seonyeong Cheong, Saed Rahwanji, and Gang-Len Chang Abstract— This research is aimed to evaluate and world have adopted many conventional measures, including compare the operational performance of three signal planning and double left-turn lanes, for alleviating this unconventional intersections: Continuous Flow problem [1]. The using of these conventional measures are Intersection (CFI), Parallel Flow Intersection (PFI) and limited as the modifications of intersection design, such as Upstream Signalized Crossover (USC). For this purpose, widening interchanges and building bypasses, are expensive various experimental designs, including traffic conditions, and disruptive [1]. In contrast, the unconventional arterial geometric features and signal plans, were set and the intersection design (UAID) is one of the methods that can average delays were compared for movements of efficiently reduce the congestion with less cost as compare through-only traffic and left-turn-only traffic. From the with the conventional measures. General principles of results of analysis, all three unconventional intersections operation and management strategies of the UAID include: 1) outperformed conventional one and among the emphasis on through traffic movements along the arterial; 2) unconventional intersections, CFI outperformed the reduction in the number of signal phases (e.g. left-turn arrow others except for some traffic conditions. In the balanced phase); and 3) reduction in the number of intersection conflict traffic condition scenario, at the low traffic volume level, points [2]. These principles allow the UAID to reduce the the average delays of through traffic for PFI were smaller traffic congestion at the intersection and improve the traffic than that of CFI and very similar at the moderate traffic safety. -
Federal Register/Vol. 70, No. 22/Thursday, February 3
5720 Federal Register / Vol. 70, No. 22 / Thursday, February 3, 2005 / Notices 1), Federal Aviation Administration, wish to receive confirmation that the FOR FURTHER INFORMATION CONTACT: Mr. 800 Independence Avenue, SW., FAA received your comments, include a Robert F. Kleinburd, Realty and Washington, DC 20591. self-addressed, stamped postcard. Environmental Program Manager, This notice is published pursuant to You may also submit comments Federal Highway Administration, 14 CFR 11.85 and 11.91. through the Internet to http:// Delaware Division, J. Allen Frear Issued in Washington, DC, on January 28, dms.dot.gov. You may review the public Federal Building, 300 South New Street, 2005. docket containing the petition, any Room 2101, Dover, DE 19904; Anthony F. Fazio, comments received, and any final Telephone: (302) 734–2966; or Mr. Mark Director, Office of Rulemaking. disposition in person in the Dockets Tudor, P.E., Project Manager, Delaware Office between 9 a.m. and 5 p.m., Department of Transportation, 800 Bay Petition for Exemption Monday through Friday, except Federal Road, P.O. Box 778, Dover, DE 19903; Docket No.: FAA–2005–20139. holidays. The Dockets Office (telephone Telephone (302) 760–2275. DelDOT Petitioner: Airbus. 1–800–647–5527) is on the plaza level Public Relations Office (800) 652–5600 Section of 14 CFR Affected: 14 CFR of the NASSIF Building at the (in DE only). 25.841(a)(2)(i) and (ii) and (3). Department of Transportation at the SUPPLEMENTARY INFORMATION: The Description of Relief Sought: To above address. Also, you may review Federal Highway Administration permit certification of the Airbus Model public dockets on the Internet at (FHWA), in cooperation with the A380 airplane without meeting http://dms.dot.gov. -
FHWA Bikeway Selection Guide
BIKEWAY SELECTION GUIDE FEBRUARY 2019 1. AGENCY USE ONLY (Leave Blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED February 2019 Final Report 4. TITLE AND SUBTITLE 5a. FUNDING NUMBERS Bikeway Selection Guide NA 6. AUTHORS 5b. CONTRACT NUMBER Schultheiss, Bill; Goodman, Dan; Blackburn, Lauren; DTFH61-16-D-00005 Wood, Adam; Reed, Dan; Elbech, Mary 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION VHB, 940 Main Campus Drive, Suite 500 REPORT NUMBER Raleigh, NC 27606 NA Toole Design Group, 8484 Georgia Avenue, Suite 800 Silver Spring, MD 20910 Mobycon - North America, Durham, NC 9. SPONSORING/MONITORING AGENCY NAME(S) 10. SPONSORING/MONITORING AND ADDRESS(ES) AGENCY REPORT NUMBER Tamara Redmon FHWA-SA-18-077 Project Manager, Office of Safety Federal Highway Administration 1200 New Jersey Avenue SE Washington DC 20590 11. SUPPLEMENTARY NOTES 12a. DISTRIBUTION/AVAILABILITY STATEMENT 12b. DISTRIBUTION CODE This document is available to the public on the FHWA website at: NA https://safety.fhwa.dot.gov/ped_bike 13. ABSTRACT This document is a resource to help transportation practitioners consider and make informed decisions about trade- offs relating to the selection of bikeway types. This report highlights linkages between the bikeway selection process and the transportation planning process. This guide presents these factors and considerations in a practical process- oriented way. It draws on research where available and emphasizes engineering judgment, design flexibility, documentation, and experimentation. 14. SUBJECT TERMS 15. NUMBER OF PAGES Bike, bicycle, bikeway, multimodal, networks, 52 active transportation, low stress networks 16. PRICE CODE NA 17. SECURITY 18. SECURITY 19. SECURITY 20. -
New Castle County
State of Delaware Department of Transportation Capital Transportation Program FY 2011 – FY 2016 New Castle County NewStatewide Castle - GrantsCounty & Allocations - Grants & Allocations 204 State of Delaware Department of Transportation Capital Transportation Program FY 2011 – FY 2016 Road Systems New Castle County - Road Systems 205 State of Delaware Department of Transportation Capital Transportation Program FY 2011 – FY 2016 Expressways New Castle County - Road Systems - Expressways 206 State of Delaware Department of Transportation Capital Transportation Program FY 2011 – FY 2016 Project Title Primavera # Project # Glenville Subdivision Improvements 09-00122 T200904401 Project This project involves the reconstruction of the remaining streets and sidewalks in the Glenville Subdivision as a result of DelDOTs Glenville Wetland Bank Project. The project will Description provide a connector road between Harbeson and East Netherfield. Project This project is a continuation of the Glenville Wetland Banking project that will restore the remaining subdivison streets and reconnect the Glenville Subdivision Justification Funding Program ROAD SYSTEMS EXPRESSWAYS Senatorial District(s) 9 Representative District(s) 19 New Castle County - Road Systems - Expressways 207 State of Delaware Department of Transportation Capital Transportation Program FY 2011 – FY 2016 Glenville Subdivision Improvements PROJECT AUTHORIZATION SCHEDULE IN ($000) FY 2011 FY 2012 FY 2013 FY 2014 PROJECT CURRENT STATE FEDERAL PHASE FUNDING SOURCE NUMBER ESTIMATE TOTAL TOTAL -
Maricopa County Department of Transportation MAJOR STREETS and ROUTES PLAN Policy Document and Street Classification Atlas
Maricopa County Department of Transportation MAJOR STREETS AND ROUTES PLAN Policy Document and Street Classification Atlas Adopted April 18, 2001 Revised September 2004 Revised June 2011 Preface to 2011 Revision This version of the Major Streets and Routes Plan (MSRP) revises the original plan and the 2004 revisions. Looking ahead to pending updates to the classification systems of towns and cities in Maricopa County, the original MSRP stipulated a periodic review and modification of the street functional classification portion of the plan. This revision incorporates the following changes: (1) as anticipated, many of the communities in the County have updated either their general or transportation plans in the time since the adoption of the first MSRP; (2) a new roadway classification, the Arizona Parkway, has been added to the Maricopa County street classification system and the expressway classification has been removed; and (3) a series of regional framework studies have been conducted by the Maricopa Association of Governments to establish comprehensive roadway networks in parts of the West Valley. Table of Contents 1. Introduction........................................................................................................................1 2. Functional Classification Categorization.............................................................................1 3. Geometric Design Standards..............................................................................................4 4. Street Classification Atlas..................................................................................................5 -
Planning and Design Guideline for Cycle Infrastructure
Planning and Design Guideline for Cycle Infrastructure Planning and Design Guideline for Cycle Infrastructure Cover Photo: Rajendra Ravi, Institute for Democracy & Sustainability. Acknowledgements This Planning and Design guideline has been produced as part of the Shakti Sustainable Energy Foundation (SSEF) sponsored project on Non-motorised Transport by the Transportation Research and Injury Prevention Programme at the Indian Institute of Technology, Delhi. The project team at TRIPP, IIT Delhi, has worked closely with researchers from Innovative Transport Solutions (iTrans) Pvt. Ltd. and SGArchitects during the course of this project. We are thankful to all our project partners for detailed discussions on planning and design issues involving non-motorised transport: The Manual for Cycling Inclusive Urban Infrastructure Design in the Indian Subcontinent’ (2009) supported by Interface for Cycling Embassy under Bicycle Partnership Program which was funded by Sustainable Urban Mobility in Asia. The second document is Public Transport Accessibility Toolkit (2012) and the third one is the Urban Road Safety Audit (URSA) Toolkit supported by Institute of Urban Transport (IUT) provided the necessary background information for this document. We are thankful to Prof. Madhav Badami, Tom Godefrooij, Prof. Talat Munshi, Rajinder Ravi, Pradeep Sachdeva, Prasanna Desai, Ranjit Gadgil, Parth Shah and Dr. Girish Agrawal for reviewing an earlier version of this document and providing valuable comments. We thank all our colleagues at the Transportation Research and Injury Prevention Programme for cooperation provided during the course of this study. Finally we would like to thank the transport team at Shakti Sustainable Energy Foundation (SSEF) for providing the necessary support required for the completion of this document. -
MDOT Access Management Guidebook
ReducingTrafficCongestion andImprovingTrafficSafety inMichiganCommunities: THE ACCESSMANAGEMENT GUIDEBOOK COMMUNITYA COMMUNITYB Cover graphics and ROW graphic by John Warbach, Planning & Zoning Center, Inc. Photos by Tom Doyle, Michigan Department of Transportation. Speed Differential graphic by Michigan Department of Transportation. Road Hierarchy graphic by Rossman Martin & Associates, Inc. Reducing Traffic Congestion and Improving Traffic Safety in Michigan Communities: THE ACCESS MANAGEMENT GUIDEBOOK October, 2001 Prepared by the Planning & Zoning Center, Inc. 715 N. Cedar Street Lansing, MI 48906-5206 517/886-0555 (tele), www.pzcenter.com Under contract to the Michigan Department of Transportation With the assistance of three Advisory Committees listed on the next page The opinions, findings and conclusions expressed in this publication are those of the authors and not necessarily those of the Michigan State Transportation Commission or the Michigan Department of Transportation or the Federal Highway Administration. Dedication This Guidebook is dedicated to the countless local elected officials, planning and zoning commissioners, zoning administrators, building inspectors, professional planners, and local, county and state road authority personnel who: • work tirelessly every day to make taxpayers investment in Michigan roads stretch as far as it can with the best possible result; and • who try to make land use decisions that build better communities without undermining the integrity of Michigan's road system. D:\word\access\title -
Study on Mixed Traffic Flow Behavior on Arterial Road
Special Issue - 2018 International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 RTCEC - 2018 Conference Proceedings Study on Mixed Traffic Flow Behavior on Arterial Road Lilesh Gautama Jinendra Kumar Jainb a Research Scholar, Department of Civil Engineering, b Associate Professor, Department of Civil Engineering, MNIT Jaipur, Rajasthan, India MNIT Jaipur, Rajasthan, India Abstract- Arterials in metropolitan cities are expected to dynamics using macroscopic functions (such as a speed- provide flexibility to the high volume of traffic. A realistic density relationship). understanding of traffic flow behaviour for such essential urban roads is necessary for traffic operation planning and The relationships among traffic flow characteristics (flow management for ensuring the desired level of service. Metro (q), speed (v), and density (k)) are typically represented politan cities in India carry different types of vehicles with different static and dynamic characteristics with a majority of graphically and referred to as fundamental diagram. The two wheelers. In the present study, the traffic characterization fundamental diagram plays an effective role in traffic flow on a dynamic scale is carried out by considering two-wheeler theory and transportation engineering [3,4]. Among the and car as reference vehicles. Speed, flow, density relationships three pair-wise‟ relationships” (e.g., speed-density, flow- are developed. density, and speed-flow), the speed-density relationship appears to be fundamental. Some of the popular The present case study is an examination of the behaviour of macroscopic models are Green shield's Model, Greenberg’s mixed traffic flow speed and flow rate on an access controlled Model, Drake Model, Underwood Model, Pipe's generalized in six-lane divided Jaipur city in Rajasthan state of India. -
Chapter 3: Design an Interconnected Street System
Chapter 3: Design an Interconnected Street System [Figure 3.1 in margin near here] Street systems either maximize connectivity or frustrate it. North American neighborhoods built prior 1950 were rich in connectivity, as evidenced by the relatively high number of street intersections per square mile typically found there.1 Interconnected street systems provide more than one path to reach surrounding major streets. In most interconnected street networks two types of streets predominate: narrow residential streets and arterial streets. In this book, for reasons explained in chapter two, we call these arterial streets in interconnected networks “streetcar” arterials. On the other end of the spectrum are the post WWII suburban cul-de-sac systems where dead end streets predominate and offer only one path from home to surrounding suburban arterials. This cul-de-sac-dominated system can be characterized as dendritic or “treelike”, the opposite of the web of connections found in interconnected systems. Streets in this system all branch out from the main “trunk”, which in Canadian and U.S. cities is usually the freeway. Attached to the main trunk of the freeway are the major “branches”, which are the feeder suburban arterial streets or minor highways. These large branches then give access to the next category down the tree, the collector streets or the minor branches in the system. Collector streets then connect to the “twigs and branch tips” of the system, the residential streets, and dead end cul-de-sacs. The major advantages of the interconnected system is that it makes all trips as short as possible, allows pedestrians and bikes to flow through the system without inconvenience, and relieves congestion by providing many alternate routes to the same place. -
Transportation Master Plan
District of West Kelowna Transportation Master Plan February 20, 2014 District of West Kelowna Transportation Master Plan FORWARD This document represents the work of three independent consultants: Boulevard Transportation Group; Strategic Infrastructure Management Inc.; and Urban Systems Ltd. The experience of each of these consultants was drawn upon to develop and interpret available transportation system data to produce a long‐term strategy and plan intended to achieve a diverse, affordable and sustainable transportation system based upon the vision and goals described herein. District of West Kelowna Transportation Master Plan Revision Log Revision # Revised By Date Revision Description 1 Boulevard Transportation February 27, 2014 Table 7 amended District of West Kelowna Transportation Master Plan EXECUTIVE SUMMARY The Transportation Master Plan (TMP) builds upon the goals and objectives of the District’s Official Community Plan (OCP) to support the social and economic health of the District. The TMP uses current and future travel patterns and public expectations to determine incremental system improvements, and integrates these with existing infrastructure maintenance and renewal needs, to present a practical and affordable long-term transportation strategy. The recommended goals for the West Kelowna TMP are separated into the short-term and long-term. Short-term goals reflect supporting the gaps in the existing road network system as priority. The long-term goals focus on the improvements that will refine the transportation network and the efficiency of the system. Goals and Objectives The TMP’s 3 short term goals are: Connect residential, business, and industrial communities effectively and efficiently; Promote the safety and security of the transportation system; and Reduce vehicular travel with higher degree of mixed land uses. -
Guide to Traffic Management Part 1: Introduction to Traffic Management
SUPERSEDED PUBLICATION This document has been superseded. It should only be used for reference purposes. For current guidance please visit the Austroads website: www.austroads.com.au Guide to Traffic Management Part 1: Introduction to Traffic Management Sydney 2015 Guide to Traffic Management Part 1: Introduction to Traffic Management Third edition project manager: Jill Hislop Publisher Austroads Ltd. Level 9, 287 Elizabeth Street Third edition prepared by: Clarissa Han and James Luk Sydney NSW 2000 Australia First and second edition prepared by: Peter Croft Phone: +61 2 8265 3300 [email protected] Third edition May 2015 www.austroads.com.au Second edition November 2009 First edition published November 2007 About Austroads This third edition includes updated descriptions of each Part in Section 2 and Table 2.1. It also includes additional information on the functional road Austroads’ purpose is to: hierarchy in Section 3.4 and a new Section 4.5 on road environment safety. • promote improved Australian and New Zealand This edition also includes updated referencing to relevant legislations, transport outcomes standards and guidelines. • provide expert technical input to national policy development on road and road transport issues Pages 13 ISBN 978-1-925294-38-5 • promote improved practice and capability by Austroads Project No. NT2004 road agencies. • promote consistency in road and road agency Austroads Publication No. AGTM01-15 operations. © Austroads Ltd 2015 Austroads membership comprises: This work is copyright. Apart from any use as permitted under the • Roads and Maritime Services New South Copyright Act 1968, no part may be reproduced by any process without Wales the prior written permission of Austroads.