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  • Restricted Crossing U-turn Informational Guide

    Publication No. FHWA-SA-14-070 August 2014

    U.S. Department of Transportation Federal Highway Administration Office of Safety 1200 New Jersey Ave., SE Washington, DC 20590

  • FOREWORD

    The Federal Highway Administration (FHWA) Every Day Counts (EDC) initiative is designed to identify and deploy innovation aimed at reducing project delivery time, enhancing safety and protecting the environment. In 2012, FHWA chose Intersection & Interchange Geometrics (IIG) to feature as one of the innovative technologies in EDC-2. Specifically, IIG consists of a family of alternative intersection designs that improve intersection safety while also reducing delay, and at lower cost and with fewer impacts than comparable traditional solutions.

    As part of the effort to mainstream these intersections, FHWA has produced a series of guides to help transportation professionals routinely consider and implement these designs. Concurrent with this Restricted Crossing U-turn (RCUT) Informational Guide, FHWA developed and published guides for three other designs: Median U-turn (MUT), Displaced Left Turn (DLT), and Diverging Diamond Interchange (DDI). These guides represent summaries of the current state of knowledge and practice, and are intended to inform project planning, scoping, design and implementation decisions.

    An electronic version of this document is available on the Office of Safety website at http://safety.fhwa.dot.gov/. Additionally, limited quantities of hard copies are available from the Report Center; inquiries may be directed to report.center@dot.gov or 814-239-1160.

    Michael S. Griffith Director Office of Safety Technologies

    Notice

    This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in this document. This report does not constitute a standard, specification, or regulation.

    The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers names appear in this report only because they are considered essential to the objective of the document.

    Quality Assurance Statement

    The Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement.

    http://safety.fhwa.dot.gov/mailto:report.center@dot.gov

  • i

    Technical Report Documentation Page

    1. Report No. FHWA-SA-14-070

    2. Government Accession No.

    3. Recipients Catalog No.

    4. Title and Subtitle Restricted Crossing U-turn Informational Guide

    5. Report Date August 2014

    6. Performing Organization Code 7. Authors Joe Hummer, Wayne State University; Brian Ray, Andy Daleiden, Pete Jenior, Julia Knudsen, Kittelson & Associates, Inc.

    8. Performing Organization Report No. Project 13517

    9. Performing Organization Name and Address Kittelson & Associates, Inc. 610 SW Alder Street, Suite 700 Portland, OR 97205

    10. Work Unit No. (TRAIS)

    11. Contract or Grant No. TO DTFH61-00023-T-13002

    12. Sponsoring Agency Name and Address U.S. Department of Transportation Federal Highway Administration Office of Safety 1200 New Jersey Ave., SE Washington, DC 20590

    13. Type of Report and Period Technical Report Informational Report September 2013 to August 2014

    14. Sponsoring Agency Code FHWA

    15. Supplementary Notes Jeffrey Shaw (jeffrey.shaw@dot.gov), Office of Safety Technologies (http://safety.fhwa.dot.gov/), served as the Technical Manager for the Federal Highway Administration (FHWA). The following FHWA staff contributed as technical working group members, reviewers and/or provided input or feedback to the project at various stages: Joe Bared, Mark Doctor, Brian Fouch, Elizabeth Hilton, Jim McCarthy, George Merritt, Will Stein, Jim Sturrock and Wei Zhang. 16. Abstract This document provides information and guidance on Restricted Crossing U-Turn (RCUT) intersections. To the extent possible, the guide addresses a variety of conditions found in the United States, to achieve designs suitable for a wide array of potential users. This guide provides general information, planning techniques, evaluation procedures for assessing safety and operational performance, design guidelines, and principles to be considered for selecting and designing RCUT intersections.

    17. Key Words RCUT, Superstreet, J-turn, Restricted Crossing U-turn, Reduced Conflict Intersection, Synchronized Street, Alternative Intersections, Innovative Intersections

    18. Distribution Statement No restrictions.

    19. Security Classif. (of this report) Unclassified

    20. Security Classif. (of this page) Unclassified

    21. No. of Pages 186

    22. Price

    Form DOT F 1700.7 (8-72) Reproduction of completed pages authorized

    mailto:jeffrey.shaw@dot.govhttp://safety.fhwa.dot.gov/

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  • Restricted Crossing U-turn Informational Guide

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    TABLE OF CONTENTS

    CHAPTER 1 INTRODUCTION ............................................................................................. 1 OVERVIEW OF ALTERNATIVE INTERSECTIONS AND INTERCHANGES ................... 1 INTERSECTION CONTROL EVALUATIONS AND CONSIDERATIONS ......................... 1 ORGANIZATION OF THE GUIDELINES .............................................................................. 2 SCOPE OF THE GUIDE ............................................................................................................ 3 RCUT INTERSECTION OVERVIEW ...................................................................................... 3 APPLICATION .......................................................................................................................... 7 RESOURCE DOCUMENTS .................................................................................................... 13

    CHAPTER 2 POLICY AND PLANNING ........................................................................... 15 PLANNING CONSIDERATIONS FOR ALTERNATIVE INTERSECTIONS AND INTERCHANGES .................................................................................................................... 15 STAKEHOLDER OUTREACH ............................................................................................... 17 POLICY CONSIDERATIONS ................................................................................................ 21 PLANNING CONSIDERATIONS .......................................................................................... 22 PLANNING CHALLENGES ................................................................................................... 24 PROJECT PERFORMANCE CONSIDERATIONS ............................................................... 25 PROJECT DEVELOPMENT PROCESS ................................................................................. 26 SUMMARY OF RCUT ADVANTAGES AND DISADVANTAGES ................................... 27

    CHAPTER 3MULTIMODAL CONSIDERATIONS .......................................................... 31 DESIGN PRINCIPLES AND APPROACH ............................................................................ 31 PEDESTRIANS ........................................................................................................................ 32 BICYCLISTS ............................................................................................................................ 42 TRANSIT VEHICLE CONSIDERATION .............................................................................. 47 HEAVY VEHICLE CONSIDERATIONS ............................................................................... 49

    CHAPTER 4 SAFETY .......................................................................................................... 51 SAFETY PRINCIPLES ............................................................................................................ 51 OBSERVED SAFETY PERFORMANCE ............................................................................... 54 SAFETY CONSIDERATIONS ................................................................................................ 58 INCIDENT RESPONSE CONSIDERATIONS ....................................................................... 61 SAFETY EVALUATION CONSIDERATIONS ..................................................................... 61

    CHAPTER 5 OPERATIONAL CHARACTERISTICS .................................................... 63 OPERATIONAL PRINCIPLES ............................................................................................... 63 SYSTEM-WIDE CONSIDERATIONS ................................................................................... 76 COMPARATIVE PERFORMANCE STUDIES ...................................................................... 79

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    CHAPTER 6 OPERATIONAL ANALYSIS ....................................................................... 83 OPERATIONAL ANALYSIS OVERVIEW ........................................................................... 84 PLANNING ANALYSIS ......................................................................................................... 87 HIGHWAY CAPACITY MANUAL (HCM) ANALYSIS ...................................................... 88 MICROSIMULATION ANALYSIS .......................

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