FHWA Bikeway Selection Guide
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Dissecting the Safety Benefits of Protected Intersection Design Features
University of Massachusetts Amherst ScholarWorks@UMass Amherst Transportation Engineering Masters Projects Civil and Environmental Engineering 2019 DISSECTING THE SAFETY BENEFITS OF PROTECTED INTERSECTION DESIGN FEATURES Nicholas Campelll University of Massachusetts Amherst Follow this and additional works at: https://scholarworks.umass.edu/cee_transportation Part of the Transportation Engineering Commons Campelll, Nicholas, "DISSECTING THE SAFETY BENEFITS OF PROTECTED INTERSECTION DESIGN FEATURES" (2019). Transportation Engineering Masters Projects. 13. Retrieved from https://scholarworks.umass.edu/cee_transportation/13 This Article is brought to you for free and open access by the Civil and Environmental Engineering at ScholarWorks@UMass Amherst. It has been accepted for inclusion in Transportation Engineering Masters Projects by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact [email protected]. DISSECTING THE SAFETY BENEFITS OF PROTECTED INTERSECTION DESIGN FEATURES A Master’s Project Presented by NICHOLAS CAMPBELL Submitted to the Graduate School of the University of Massachusetts Amherst in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN CIVIL ENGINEERING MASTER OF REGIONAL PLANNING May 2019 Dual Degree in Civil Engineering and Regional Planning ACKNOWLEDGMENTS Many thanks are extended to my committee for their guidance and assistance throughout this process, special thanks to Dr. Michael Knodler Jr. and Dr. Mark Hamin for creating the dual degree path in Transportation Engineering and Regional Planning. A big thanks to those who helped me learn how the driving simulator works, especially Ganesh Pai Mangalore and Katerina Deliali. iii ABSTRACT DISSECTING THE PERFORMANCE SAFETY BENEFITS OF PROTECTED INTERSECTION DESIGN MAY 2019 NICHOLAS CAMPBELL, M.S.C.E, UNIVERSITY OF MASSACHUSETTS AMHERST MRP, UNIVERSITY OF MASSACHUSETTS AMHERST Directed by: Mark Hamin & Michael A. -
2. Basic Roadway Improvements the Street System Provides the Basic Network for Bicycle Travel
Figure 2-1: Many low-volume resi- YES dential streets need only the most basic improve- ments to make them more ridable. 2. Basic Roadway Improvements The street system provides the basic network for bicycle travel. Other ele- ments (e.g., bike lanes and paths) supplement this system. To make most streets work for bicyclists, basic improvements may be needed. Such things as safe railroad crossings, traffic signals that work for bicyclists, and street networks that connect benefit bicyclists and make more bicycle trips possible and likely. 2.1 Roadway types While the most basic improvements are appropriate for all categories of street, some improvements are most appropriate for certain categories. In a typical community, streets types range from quiet residential streets, to minor collector streets, to major arterials, and highways or expressways. Figure 2-2: Long blocks and a lack 2.1.1 Residential streets of connectivity On quiet residential streets with little traffic and slow speeds (fig. 2-1), make trips longer bicyclists and motorists can generally co-exist with little difficulty. Such and discourage streets seldom need bike lanes. Only the most basic improvements may bicycling for pur- poseful trips. be required, for instance: • bicycle-safe drainage grates • proper sight distance at intersections • smooth pavement and proper maintenance One additional factor that may need attention is connectivity. Providing bicycle linkages between residential streets and nearby commercial areas or adjacent neighborhoods can significantly improve bicycling conditions. In many communi- 2-1 Wisconsin Bicycle Facility Design Handbook ties, newer parts of town tend to have dis- Figure 2-3: Bicycle- continuous street networks that require bicy- pedestrian connec- clists, pedestrians, and motorists to travel a tions like that long distance to get to a nearby destination shown can provide (fig. -
Written Comments
Written Comments 1 2 3 4 1027 S. Lusk Street Boise, ID 83706 [email protected] 208.429.6520 www.boisebicycleproject.org ACHD, March, 2016 The Board of Directors of the Boise Bicycle Project (BBP) commends the Ada County Highway District (ACHD) for its efforts to study and solicit input on implementation of protected bike lanes on Main and Idaho Streets in downtown Boise. BBP’s mission includes the overall goal of promoting the personal, social and environmental benefits of bicycling, which we strive to achieve by providing education and access to affordable refurbished bicycles to members of the community. Since its establishment in 2007, BBP has donated or recycled thousands of bicycles and has provided countless individuals with bicycle repair and safety skills each year. BBP fully supports efforts to improve the bicycle safety and accessibility of downtown Boise for the broadest segment of the community. Among the alternatives proposed in ACHD’s solicitation, the Board of Directors of BBP recommends that the ACHD pursue the second alternative – Bike Lanes Protected by Parking on Main Street and Idaho Street. We also recommend that there be no motor vehicle parking near intersections to improve visibility and limit the risk of the motor vehicles turning into bicyclists in the protected lane. The space freed up near intersections could be used to provide bicycle parking facilities between the bike lane and the travel lane, which would help achieve the goal of reducing sidewalk congestion without compromising safety. In other communities where protected bike lanes have been implemented, this alternative – bike lanes protected by parking – has proven to provide the level of comfort necessary to allow bicycling in downtown areas by families and others who would not ride in traffic. -
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. -
Guidance for Protected/Buffered Bike Lanes with Delineators: Literature Search July 6, 2017
Guidance for Protected/Buffered Bike Lanes with Delineators: Literature Search July 6, 2017 Prepared for: Marcus Bekele Prepared by: Karen Neinstadt Resources searched: Transport database, Web, MnDOT Library catalog, TRB Research in Progress Summary: This literature search reflects results on protected and/or buffered bike lanes. Sometimes the phrase, “cycle track” is also used. The term “delineator” was not consistent in the results but it is included where found and relevant. Most Relevant Results Michigan Street Protected Bike Lane Demonstration Project (Duluth-Superior Metropolitan Interstate Council) http://dsmic.org/study/pbl/ FHWA Separated Bike Lane Planning and Design Guide https://www.fhwa.dot.gov/environment/bicycle_pedestrian/publications/separated_bikelane_pdg/page00.cfm Lessons from the Green Lanes: Evaluating Protected Bike Lanes in the U.S. https://bikeportland.org/wp-content/uploads/2014/06/NITC-RR-583_ProtectedLanes_FinalReportb.pdf Minneapolis is Breaking Bicycling Ground with New Protected Lanes: Here’s What’s Working https://www.minnpost.com/cityscape/2015/09/minneapolis-breaking-bicycling-ground-new-protected-lanes- here-s-what-s-working Understanding Bicycle Markings in Minneapolis: A Guide for Motorists and Bicyclists http://www.minneapolismn.gov/www/groups/public/@publicworks/documents/images/wcms1p-083551.pdf Minneapolis Plans Big Push for Protected Bike Lanes in City Core http://www.startribune.com/minneapolis-plans-big-push-for-protected-bike-lanes-in-city-core/294450161/ Bikeways for Everyone: Protected Bike Lanes http://www.bikewaysforeveryone.org/protected_bike_lanes Title: Using Simulation to Assess and Reduce Conflicts between Drivers and Bicyclists. URL: http://rip.trb.org/view/1459790 Abstract: Separated bicycle lanes, or cycle tracks, are increasing in popularity across the nation. -
Pedestrian and Bicycle Friendly Policies, Practices, and Ordinances
Pedestrian and Bicycle Friendly Policies, Practices, and Ordinances November 2011 i iv . Pedestrian and Bicycle Friendly Policies, Practices, and Ordinances November 2011 i The Delaware Valley Regional Planning The symbol in our logo is Commission is dedicated to uniting the adapted from region’s elected officials, planning the official professionals, and the public with a DVRPC seal and is designed as a common vision of making a great region stylized image of the Delaware Valley. even greater. Shaping the way we live, The outer ring symbolizes the region as a whole while the diagonal bar signifies the work, and play, DVRPC builds Delaware River. The two adjoining consensus on improving transportation, crescents represent the Commonwealth promoting smart growth, protecting the of Pennsylvania and the State of environment, and enhancing the New Jersey. economy. We serve a diverse region of DVRPC is funded by a variety of funding nine counties: Bucks, Chester, Delaware, sources including federal grants from the Montgomery, and Philadelphia in U.S. Department of Transportation’s Pennsylvania; and Burlington, Camden, Federal Highway Administration (FHWA) Gloucester, and Mercer in New Jersey. and Federal Transit Administration (FTA), the Pennsylvania and New Jersey DVRPC is the federally designated departments of transportation, as well Metropolitan Planning Organization for as by DVRPC’s state and local member the Greater Philadelphia Region — governments. The authors, however, are leading the way to a better future. solely responsible for the findings and conclusions herein, which may not represent the official views or policies of the funding agencies. DVRPC fully complies with Title VI of the Civil Rights Act of 1964 and related statutes and regulations in all programs and activities. -
SHARED LANE MARKINGS (Sharrow) SHOULDER BICYCLE
BICYCLE FACILITIES DEFINITIONS SHARED LANE (wide curb/outside lanes) SHARED LANE MARKINGS (sharrow) A lane of a traveled way that is open to bicycle travel and A pavement marking symbol that indicates an appropriate bicycle vehicular use. positioning in a shared lane. SHOULDER CYCLE TRACK The portion of the roadway contiguous with the traveled way, for A portion of a right-of-way contiguous with the traveled way, which accommodation of stopped vehicles, emergency use and lateral has been designated by pavement markings and, if used, signs, for support of sub-base, base and surface courses, often used by the exclusive use of bicyclists. Cycle tracks are typically one-way cyclists where paved. (not always), may or may not be raised above the roadway and are separated from the motor vehicle lane by a barrier or buffer such as a rolled curb, cross-hatched paint, planting strip or parked cars. BICYCLE LANE OR BIKE LANE A portion of a roadway which has been designated by pavement markings and, if used, signs, for the preferential or exclusive use of bicyclists. BICYCLE FACILITIES DEFINITIONS SHARED USE PATH BICYCLE PARKING A bikeway physically separated from motorized vehicular traffic Bicycle racks should be designed so that they: by an open space or barrier and either within the highway right-of- • Support the bicycle at two points above its center of gravity. way or within an independent right-of-way. Shared use paths may • Accommodate high security U-shaped bike locks. also be used by pedestrians, skaters, wheelchair users, joggers • Accommodate locks securing the frame and one or both wheels and other non-motorized users. -
Bicycle Public Hearing Summary Report
BICYCLE PUBLIC HEARING SUMMARY REPORT DALLAS AND FORT WORTH DISTRICTS IN COORDINATION WITH NORTH CENTRAL TEXAS COUNCIL OF GOVERNMENTS OCTOBER 2014 Bicycle Public H earing October 2014 CONTENTS 1. PUBLIC HEARING SUMMARY AND ANALYSIS/RECOMMENDATIONS 2. PUBLIC HEARING COMMENT AND RESPONSE REPORT 3. PUBLIC HEARING POLL RESULTS 4. PUBLIC HEARING SURVEY RESULTS APPENDIX A. COPY OF WRITTEN COMMENTS B. COPY OF SURVEY RESULTS C. COPY OF ATTENDANCE SHEETS D. PUBLIC MEETING PHOTOS Bicycle Public H earing October 2014 1. PUBLIC HEARING SUMMARY AND ANALYSIS / RECOMMENDATIONS FOR: Texas Dept. Of Transportation (TxDOT), Dallas and Fort Worth Districts Annual Bicycle Public Hearing PURPOSE: To conduct a public hearing on transportation projects and programs that might affect bicycle use, in accordance with Title 43 of Texas Administrative Code, Subchapter D, §25.55 (b). PARTNERS: North Central Texas Council of Governments (NCTCOG) Public Hearing Format The bicycle public hearing agenda is as follows: (1) Open House 5:00 p.m. to 6:00 p.m (2) Welcome and Introductions 6:00 p.m. to 6:10 p.m. (a) Kathy Kleinschmidt, P.E., TxDOT Dallas District (3) Presentations 6:10 p.m. to 7:30 p.m. (a) State Bike Plan and Programs (i) Teri Kaplan – Statewide Bicycle Coordinator (b) Bicycle Policies and Projects (i) Kathy Kleinschmidt, P.E. – TxDOT Dallas District (ii) Phillip Hays, P.E. – TxDOT Fort Worth District (c) Regional Bicycle Programs and Projects (i) Karla Weaver, AICP – NCTCOG (4) Open House 7:30 p.m. to 8:00 p.m. Need and Purpose In accordance with Title 43 of Texas Administrative Code, Subchapter D, §25.55 (b) , a notice for the opportunity of a public hearing for transportation projects for bicycle use was published in the local newspapers for TxDOT’s Dallas and Fort Worth districts in April 2014. -
Literature Review- Resource Guide for Separating Bicyclists from Traffic
Literature Review Resource Guide for Separating Bicyclists from Traffic July 2018 0 U.S. Department of Transportation Federal Highway Administration 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. Technical Report Documentation Page 1. REPORT NO. 2. GOVERNMENT ACCESSION NO. 3. RECIPIENT'S CATALOG NO. FHWA-SA-18-030 4. TITLE AND SUBTITLE 5. REPORT DATE Literature Review: Resource Guide for Separating Bicyclists from Traffic 2018 6. PERFORMING ORGANIZATION CODE 7. AUTHOR(S) 8. PERFORMING ORGANIZATION Bill Schultheiss, Rebecca Sanders, Belinda Judelman, and Jesse Boudart (TDG); REPORT NO. Lauren Blackburn (VHB); Kristen Brookshire, Krista Nordback, and Libby Thomas (HSRC); Dick Van Veen and Mary Embry (MobyCON). 9. PERFORMING ORGANIZATION NAME & ADDRESS 10. WORK UNIT NO. Toole Design Group, LLC VHB 11. CONTRACT OR GRANT NO. 8484 Georgia Avenue, Suite 800 8300 Boone Boulevard, Suite 300 DTFH61-16-D-00005 Silver Spring, MD 20910 Vienna, VA 22182 12. SPONSORING AGENCY NAME AND ADDRESS 13. TYPE OF REPORT AND PERIOD Federal Highway Administration Office of Safety 1200 New Jersey Ave., SE Washington, DC 20590 14. SPONSORING AGENCY CODE FHWA 15. SUPPLEMENTARY NOTES The Task Order Contracting Officer's Representative (TOCOR) for this task was Tamara Redmon. -
Evaluation of Concrete Pavements with Tied Shoulders Or Widened Lanes Bert E
39 19. K. Y. Kung. A New Method in Correlation Study of vision of Pavements. Proc., 3rd International Con Pavement Deflection and Cracking. Proc., 2nd In ference on Structural Design of Asphalt Pavements, ternational Conference on Structural Design of 1972, pp. 1188-1205. Asphalt Pavements, 1967, pp. 1037-1046. 20. P. H. Leger and P. Autret. The Use of Deflection Publication of this paper sponsored by Committee on Pavement Condi Measurements for the Structural Design and Super- tion Evaluation. Evaluation of Concrete Pavements With Tied Shoulders or Widened Lanes Bert E. Colley, Claire G. Ball, and Pichet Arriyavat, Portland Cement Association Field and laboratory pavements were instrumented and load tested to reducing pavement performance, Because of this prob evaluate the effect of widened lanes, concrete shoulders, and slab thick lem, several states have installed costly longitudinal ness on measured strains and deflectfons. Eight slabs were tested in the and transverse drainage systems. Thus, concrete field and two in the laboratory. Pavement slabs were 203, 229, or 254 shoulders and widened lanes have the potential for curing mm (8, 9, or 10 in) thick. Other major design variables included the width of lane widening, the presence or absence of dowels or of a con many drainage problems as well as providing additional crete shoulder, joint spacing, and the type of shoulder joint construc slab strength. tion. Generally, there was good agreement between measured strains and Many design features contribute to pavement life. values calculated by using Westergaard's theoretical equations. Concrete The effect of some of these features can be evaluated shoulders were effective in reducing the magnitude of measured strains analytically. -
Pedestrian and Bicycle Infrastructure Network Data Catalog
Pedestrian and Bicycle Infrastructure Network Data Catalog Created by Institute for Transportation Research and Education Bicycle and Pedestrian Program For North Carolina Department of Transportation Division of Bicycle and Pedestrian Transportation January 21, 2016 JANUARY 2016 PBIN DATA CATALOG PBIN Data Catalog Each dataset provides a consistent set of attribute fields on existing bicycle, pedestrian, and shared-use path data for use in asset management as well as proposed data for use in planning and project development by PGI awarded communities. Where applicable, fields or attributes marked with an asterisk (*) are required data for NCDOT Planning Grant Initiative (PGI) communities to collect and/or update as a condition of award. PGI communities should consider including additional fields or attributes from the Data Catalog when inventorying focus areas or corridors, as identified through the plan development process. The data catalog is broken up into three sections: 1. BICYCLE ASSETS The Bike_Fac_Linear feature class includes polyline data on existing and proposed facilities such as bike lanes, bike routes, bicycle boulevards, and paved shoulders. It also includes information on surface condition, facility width, slope, and rumble strips. The Bike_Fac_Point feature class includes polyline data on existing and proposed facilities such as bike parking, crossing improvement, bike boxes, bike share kiosks, and bike detection loops. It also includes information on bicycle-oriented signage and hazardous grates. It also includes information on surface condition, facility width, slope, and rumble strips. The Ped_Fac_Linear feature class includes polyline data on existing and proposed facilities such as sidewalks and other types of footpaths. It includes information on material, facility width, buffer, buffer width and slope.