the 2012 aashto bike guide: an overviewoverview of the 2012 aashto guide Âaashto covers paths +...
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{Enter Module Name on Master Slide}
The 2012 AASHTO Bike Guide: An Overview
Presentation by:Jennifer Toole, AICP, ASLAPeter LagerweyAugust 10, 2012
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Overview of the 2012 AASHTO Guide
WEBINAR #1: OVERVIEW OF 2012 AASHTO BIKE GUIDE
Today’s Webinar
Some Background
Major Content Changes
Chapter by Chapter
Intro to Content Changes
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Overview of the 2012 AASHTO Guide
FUTURE WEBINARS
August 22: Planning Chapter
September 4: On-Road Bikeways
Bike Lanes (including Intersections)
September 18: On-Road Bikeways
Shared lanes
Bicycle boulevards & signing
Signals
October 9: Shared Use PathsGeneral design principles
Pathway geometry
October 23: Shared Use PathsIntersection Design
Mid-block crossings
November 6: Bikeway Maintenance and Operation
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Overview of the 2012 AASHTO Guide
http://www.walkinginfo.org/training/pbic/AASHTO_Promo_Flyer.pdf
DISCOUNT FOR WEBINAR PARTICIPANTS
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Overview of the 2012 AASHTO Guide
What is AASHTO?Mission: “provides technical services to support states in their efforts to efficiently and safely move people and goods”
Some history4th Edition of the Guide
Last Guide – 1999, largely written in 96-98
Standards vs. guidance
BACKGROUND
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Overview of the 2012 AASHTO Guide
NCHRP - National Academy of SciencesPre-StudyPreparation of the content of the 4th EditionFinal edits/State DOT balloting process
HOW THE GUIDE WAS DEVELOPED
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Overview of the 2012 AASHTO Guide
Project Team
Toole Design Group Jennifer Toole – Principal Investigator
Subconsultants:John LaPlante, P.E., PTOE
Michael Moule, P.E.
Michael Ronkin
Mia Birk
Matthew Ridgeway
Shawn Turner, P.E.
Srinivasa Sunkari, P.E.
Bill Hunter
PREPARATION OF CONTENT
NCHRP Panel
Dwight Kingsbury, Chair
Denise Chaplick
David Church, P.E.
Ann Do
Eric Glick
Thomas Huber
Mary Meletiou
Richard Moeur, P.E.
William Prosser, P.E.
William Riccio, Jr., P.E.
Cara Seiderman
Richard Pain
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Overview of the 2012 AASHTO Guide
HOW THE AASHTO BIKE GUIDE IS USED
State DOTsBasis for State Guides or Standards
Local JurisdictionsUse State version of the AASHTO Bike Guide, or
Develop own version of the AASHTO Bike Guide
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Overview of the 2012 AASHTO Guide
Sold 1200 copies in the first monthGuide expanded from 75 pages to over 200 pages3 chapters to 7 chapters
RELEASE OF THE GUIDE – JUNE 2012
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Overview of the 2012 AASHTO Guide
2009 MUTCD – FHWA2011 AASHTO Green BookPublic Right-of-Way Accessibility Guidelines (PROWAG)2010 Highway Capacity Manual
RELATIONSHIP TO OTHER MANUALS
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Overview of the 2012 AASHTO Guide
AASHTO covers paths + on-road bikeways
AASHTO covers design comprehensively
AASHTO covers many – but not all innovations
NACTO is a source of information for solutions that are currently being tested
AASHTO VS. NACTO GUIDES: EITHER/OR?
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Overview of the 2012 AASHTO Guide
Guidance on how to choose bikeway typeAffirms lane diets and road dietsExpanded bike lane guidanceExpanded signal guidanceExpanded shared use path guidance (including paths adjacent to roads)
MAJOR CHANGES IN 2012 GUIDE
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Overview of the 2012 AASHTO Guide
No differentiation of what type of bikeway was appropriate given roadway characteristics
CHOOSING BIKEWAY TYPE – 1999 GUIDE
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Overview of the 2012 AASHTO Guide
Detailed guidance on facility selection.Support for bike lanes and shared use paths where volumes and speeds are higher.
CHOOSING BIKEWAY TYPE – 2012 GUIDE
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Overview of the 2012 AASHTO Guide
Multiple warnings against using wide curb lanes as a standard solution for major roadwaysDiscusses the appropriate use of shared lanesWide curb lanes may have shared lane markings & signs
CHOOSING BIKEWAY TYPE – 2012 GUIDE
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Overview of the 2012 AASHTO Guide
Refers to Bicycle Level of Service as a toolProvides roadway characteristics to considerAlso states that bike routes are not a “bikeway type”
CHOOSING BIKEWAY TYPE – 2012 GUIDE
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Overview of the 2012 AASHTO Guide
Permission to narrow lane widths to create bike lanes10’ and 11’ wide travel lanes are acceptableProvides guidelines for road diets
LANE DIETS AND ROAD DIETS
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Overview of the 2012 AASHTO Guide
Nuanced guidance on widths (4 to 7 feet)Measures to reduce crashes with car doorsBike lanes adjacent to back-in angle parkingBike lanes at roundabouts
BIKE LANES
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Overview of the 2012 AASHTO Guide
Between the bike lane and parking lane – or; Between the bike lane and the adjacent travel lane
BUFFERED BIKE LANES
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Overview of the 2012 AASHTO Guide
“Based on Interim Approval issued by FHWA in April 2011, contrasting green color pavement may be used in marked bike lanes, and in extensions of bike lanes through intersections and other traffic conflict areas, such as merge areas where turning vehicles must cross a through bike lane.” (p. 4-20)
GREEN BIKE LANES
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Overview of the 2012 AASHTO Guide
BACK-IN ANGLED PARKING
Bike lanes not recommended at front-in angle parkingProvides design guidance for bike lanes at front of back-in angle parking
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Overview of the 2012 AASHTO Guide
New guidance –intersections, crossings and side pathsBollards are discouragedNo single design speed5% grade – no landings (refer to US Access Bd.)
SHARED USE PATHS
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Overview of the 2012 AASHTO Guide
Expands discussion of operational problemsAcknowledges reasons for building paths adjacent to roadwaysProvides guidance on when and where these facilities are appropriate
guidance considerations
PATHS ADJACENT TO ROADWAYS
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Overview of the 2012 AASHTO Guide
“May be possible” to place one-way paths on both sides of a roadway (type of cycle track)Provides planning and design considerations
ONE-WAY SIDEPATHS
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Overview of the 2012 AASHTO Guide
Should accommodate bicyclistsNew guidance on minimum green, extension time when bicyclist is presentNew formulasNew information on bicycle detectionAllows bicycle specific signals
SIGNALS
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Overview of the 2012 AASHTO Guide
New guidance explains what they are, and how they can be used to benefit bicyclistsGuide provides design treatments for creating bicycle boulevards
BICYCLE BOULEVARDS
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Overview of the 2012 AASHTO Guide
MAJOR CONTENT CHANGES
Integrating Bikes with TransitBike access to transit vehiclesBike parking at transit stationsBikeways to transitPromoting bikes on transit
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Overview of the 2012 AASHTO Guide
Bike boxesRaised bike lanesBicycle signal heads
ISSUES NOT ADDRESSED BY THIS GUIDE
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Overview of the 2012 AASHTO Guide
Table of Contents
1: Introduction
2: Bicycle Planning3: Bicycle Operation & Safety4: Design of On-Road Facilities5: Design of Shared Use Paths
CHAPTER BY CHAPTER – INTRO TO CONTENT CHANGES
6: Bicycle Parking Facilities7: Maintenance and Operations
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Overview of the 2012 AASHTO Guide
Similar to previous guidesRetains strong statement: “All roads, streets, and highways, except those where bicyclists are legally prohibited, should be designed and constructed under the assumption that they will be used by bicyclists.”
CHAPTER 1
INTRODUCTION
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Overview of the 2012 AASHTO Guide
Bicyclists need accommodation on ALL roadways
Prioritize most important improvements
Explains:The practical approach of network planning
Choosing an appropriate facility type
Multiple facilities on a single corridor
Wayfinding
CHAPTER 2
BICYCLE PLANNING
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Overview of the 2012 AASHTO Guide
Data collection: bike countsQuality of service toolsSafety analysisGIS-based network planningBicycle travel demand analysisCost benefit analysis
Key role of public input
CHAPTER 2
TECHNICAL ANALYSIS TOOLS
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Overview of the 2012 AASHTO Guide
Sets the stage for Design ChaptersOrganizes info on design vehicle
Characteristics of Emerging Road and Trail Users (FHWA Study)
Overview of traffic principles for bicycles
Positioning on the roadway in different situations
Causes of bicycle crashesUrban vs. rural
Young vs. adult riders
Etc.
CHAPTER 3
BICYCLE OPERATION AND SAFETY
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Overview of the 2012 AASHTO Guide
Most expanded section in AASHTO Bike Guide
New/more guidance on bike lanes
Buffered bike lanes
Green bike lanes
Nuance on width (4’ to 7’)
Designs to reduce ‘dooring’
Climbing lanes
Complex intersections
CHAPTER 4
DESIGN OF ON-STREET FACILITIES
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Overview of the 2012 AASHTO Guide
CHAPTER 4
DESIGN OF ON-STREET FACILITIES
New sectionsShared lane markings
Where to use
Placement
Bicycle boulevardsWhen and where to use
Treatments
Wayfinding signageGuidance on design & placement
Deemphasizes bike routes (not a facility type)
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Overview of the 2012 AASHTO Guide
CHAPTER 4
DESIGN OF ON-STREET FACILITIES
New guidance on traffic signals
Clearance intervals
Minimum green timeNew “Bicycle Signal”Technical guidance on bike detectionSpecial signal types
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Overview of the 2012 AASHTO Guide
CHAPTER 4
DESIGN OF ON-STREET FACILITIES
New/revised guidancePaved Shoulders (including rumble strips)
Roadway Bridges
Bicycles and Traffic Calming
Bicycles on Freeways
Bicycles at Roundabouts
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Overview of the 2012 AASHTO Guide
New stand-alone chapterReflects several significant studies:
Characteristics of Emerging Trail and Roadway UsersShared Use Path Level of ServiceSafety Effects of Marked Versus Unmarked Crosswalks at Uncontrolled Locations
Fills missing gaps in the old Guide
CHAPTER 5
DESIGN OF SHARED USE PATHS
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Overview of the 2012 AASHTO Guide
CHAPTER 5
DESIGN OF SHARED USE PATHS
New Accessibility Requirements
Width of PathwaysNuanced guidance on widths
Safety Rail GuidelinesSlopes/shoulders/railing heights
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Overview of the 2012 AASHTO Guide
Revised Guidance on Design Speed“No single design speed” for paths
Revised Guidance on Horizontal Alignment
Formula is now based on lean angle rather than super elevation
New Guidance on Speed Control on Paths
Introduces geometric design and other ideas to reduce speed
CHAPTER 5
DESIGN OF SHARED USE PATHS
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Overview of the 2012 AASHTO Guide
CHAPTER 5
DESIGN OF SHARED USE PATHS
Revised Running Grades
Options to mitigate excessive grades
Stopping Sight DistanceNew braking friction factor
Longer stopping distances
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Overview of the 2012 AASHTO Guide
Expanded guidance on bridges and underpassesLighting
Nighttime lighting, intersections, security
Path-roadway intersectionsDesign considerations
Midblock crossings
Assignment of ROW
CHAPTER 5
DESIGN OF SHARED USE PATHS
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Overview of the 2012 AASHTO Guide
Planning for bicycle parkingShort-term bicycle parking
Location
Design
Special types of racks
Long-term bicycle parking
CHAPTER 6
BICYCLE PARKING FACILITIES
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Overview of the 2012 AASHTO Guide
Sweeping
Surface repairs
Pavement overlays
Vegetation
Loop detectors
Signs, stripes and legends
Drainage facilities
Chip sealing
Patching activities
CHAPTER 7
MAINTENANCE AND OPERATIONS
Utility cuts
Snow removal
Spot improvement programs
Operation during construction
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Overview of the 2012 AASHTO Guide
Contact Information:
Jennifer Toole
Toole Design Group
Peter Lagerwey
Toole Design Group
QUESTIONS?
@tooledesign
AASHTO 20% Discount:http://www.walkinginfo.org/training/pbic/AASHTO_Promo_Flyer.pdf
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Overview of the 2012 AASHTO Guide
FUTURE WEBINARS
August 22: Planning Chapter
September 4: On-Road Bikeways
Bike Lanes (including Intersections)
September 18: On-Road Bikeways
Shared lanes
Bicycle boulevards & signing
Signals
October 9: Shared Use PathsGeneral design principles
Pathway geometry
October 23: Shared Use PathsIntersection Design
Mid-block crossings
November 6: Bikeway Maintenance and Operation