PBOT Traffic Design Manual Volume 1
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Traffic Design Manual Volume 1: Permanent Traffic Control and Design CITY OF PORTLAND, OREGON January 2020 Updated June 2021 0 of 135 Table of Contents Preface .......................................................................................................................................................... 3 Glossary ........................................................................................................................................................ 4 1 Permanent Traffic Control Signs ............................................................................................................... 7 1.1 Regulatory Signs ................................................................................................................................. 8 1.2 Warning Signs .................................................................................................................................. 17 1.3 Guide Signs....................................................................................................................................... 21 2 Pavement Markings ................................................................................................................................. 31 2.1 Centerlines ........................................................................................................................................ 31 2.2 Lane Widths ...................................................................................................................................... 33 2.3 Turn Lanes ........................................................................................................................................ 35 2.4 Stop Bars .......................................................................................................................................... 37 2.5 DO NOT BLOCK markings ............................................................................................................. 38 2.6 Guidance and Warning Devices ....................................................................................................... 38 2.7 Parking .............................................................................................................................................. 39 3 Traffic Signals .......................................................................................................................................... 41 3.1 Traffic Signal Warrants and Design Elements ................................................................................. 41 3.2 Traffic Signal Approval Process ....................................................................................................... 41 3.3 Half Signal Guidelines ...................................................................................................................... 44 3.4 RRFB Guidelines .............................................................................................................................. 46 4 Traffic Control and Design for Pedestrians ............................................................................................. 49 4.1 Pedestrian Signs ................................................................................................................................ 49 4.2 Crosswalks ........................................................................................................................................ 51 4.3 Pedestrian Island Design .................................................................................................................. 60 5 Traffic Control for School Areas ............................................................................................................. 63 5.1 School Signs ..................................................................................................................................... 63 5.2 School Crosswalks ............................................................................................................................ 65 5.3 School Traffic Signal Warrants ........................................................................................................ 66 6 Traffic Control and Design for People Biking ......................................................................................... 67 6.1 Bicycle Signs .................................................................................................................................... 67 6.2 Bicycle Pavement Markings ............................................................................................................. 71 6.3 Green-Colored Bike Facilities .......................................................................................................... 80 6.4 Bicycle Signals ................................................................................................................................. 87 6.5 Bicycle Facilities .............................................................................................................................. 88 6.6 Construction Traffic Control for Bicycles ........................................................................................ 94 7 Traffic Control and Design for Transit .................................................................................................... 95 7.1 Transit Queue Bypass and Queue Jump/Bus Signal Designs ........................................................... 95 7.2 Transit/BUS Only and Business Access and Transit (BAT) Lane Design ....................................... 97 7.3 Transit Stop Design ........................................................................................................................ 106 7.4 Transit Stop Designs - Streets With Bike Facilities ....................................................................... 111 8 Traffic Calming ...................................................................................................................................... 119 8.1 Speed Bumps .................................................................................................................................. 119 8.2 Traffic Circles ................................................................................................................................. 125 8.3 Curb Extensions .............................................................................................................................. 130 9 Shared Streets......................................................................................................................................... 133 References ................................................................................................................................................. 134 1 of 135 The PBOT Traffic Design Manual currently consists of three volumes, which can be accessed and printed in their entirety from the PBOT website: Volume 1: Permanent Traffic Control and Design https://www.portlandoregon.gov/transportation/article/751333 Volume 2: Temporary Traffic Control https://www.portlandoregon.gov/transportation/article/648243 Volume 3: Traffic Signal Design Guide https://www.portlandoregon.gov/transportation/article/643224 The City of Portland ensures meaningful access to city programs, services, and activities to comply with Civil Rights Title VI and ADA Title II laws and reasonably provides: translation, interpretation, modifications, accommodations, alternative formats, auxiliary aids and services. To request these services, contact 503-823-5185, City TTY 503-823-6868, Relay Service: 711. 2 of 135 Preface Preface PURPOSE The Manual of Uniform Traffic Control Devices (MUTCD) sets forth the basic principles that govern the use of traffic control devices. The Oregon Department of Transportation adopts a Supplement to the MUTCD. The Portland Bureau of Transportation (PBOT) Traffic Design Manual is intended for use as a supplement to the MUTCD and Oregon Supplement. It documents standard practices of the bureau and provides guidelines for specific traffic control devices not included in the MUTCD. In this manual, the words “shall,” “should” and “may” are used to describe specific conditions. To clarify the use of these terms, the following definitions apply. 1. SHALL: A mandatory condition or action. 2. SHOULD: The practice under normal conditions. 3. MAY: An option where no requirement for design, application, or standards is intended. This manual references the City of Portland Standard Construction Specifications, Special Provisions and Standard Drawings, as well as ODOT Standard Drawings, which shall supersede information contained in this document. Current versions can be found on the Design + Construction page of PBOT’s website, which is on the PDX Streets & Infrastructure tab, under For Engineers, Contractors & Consultants: https://www.portlandoregon.gov/transportation/40032 3 of 135 Glossary Glossary ADA STANDARDS The 2010 Americans with Disabilities Act (ADA) Standards for Accessible Design and, if any, supplemental ADA standards for application within the public right-of-way, as adopted by the US Department of Justice and US Department of Transportation. ARTERIAL A street with a high traffic volume that forms part of the network carrying the majority of traffic entering, leaving, and moving across the city. This street type also carries mass transit and freight. BIKE BOX A green pavement marking installed at intersections to reduce conflicts between people biking and driving.