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Transcript of The “ITE/CNU Manual” - NARCnarc.org/uploads/jackygrimshaw2.pdf · The “ITE/CNU Manual”...
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The “ITE/CNU Manual”
User-Initiated Changes andImplementation
Jacky GrimshawSeptember 11, 2008
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What is the “Manual?”Context Sensitive Solutions In Designing Major Urban Thoroughfares For Walkable Communities• Guidelines – apply CSS to
– Major thoroughfares– Urban– Multimodal– All users– “Walkable” areas– Planning– Design
• Proposed ITE recommendation– Published– Subject to refinement Guidelines
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Sponsors
• Federal Highway Administration
• Environmental Protection Agency
Institute of Transportation Engineers
Congress for the New Urbanism
Partner PreparersPartner Preparers
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Report Objectives• Aid context sensitive design
• CSS principles for planning, project development– Network– Corridor– Project
• Create a design framework
• Present criteria and guidance
• Consistent with established guidance
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Contents – Proposed Recommended Practice• Introduction
– Overview• Planning
– Network and corridor planning– Design framework
• Design– Principles, criteria, guidelines
• Roadside• Traveled way• Intersections
– Design in constrained rights-of-way– Flexibility– Examples
“Fact Sheet”Series
“Fact Sheet”Series
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Current Status of Proposed RP
• Published March 2006• Received nearly 850 user comments• Comments to be addressed• Multi-disciplinary Advisory Committee to assist• Revised Recommended Practice for final approval expected
late 2008
E14th Corridor - San Leandro, CA Source: Community, Design + Architecture
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Tenets of CSS• Bring place and thoroughfare
design together • Balance
– Safety– Mobility– Community objectives– Environment
• Multimodal• Involve public, stakeholders• Interdisciplinary teams• Flexibility in design• Incorporate aesthetics Source: Minnesota Department of Transportation
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CSS: Bringing Place and Thoroughfare Design Together
E14th Corridor - San Leandro, CA Source: Community, Design + Architecture
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CSS: Bringing Place and Thoroughfare Design Together
E14th Corridor - San Leandro, CA Source: Community, Design + Architecture
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CSS: Bringing Place and Thoroughfare Design Together
E14th Corridor - San Leandro, CA Source: Community, Design + Architecture
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Intended Users
• Transportation/civil engineers• Transportation planners• Land use planners• Design professionals
– Architects, urban designers, landscape• Stakeholders
– Elected officials, agencies, developers, citizens
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CSS Design Framework• Context zones:
– Suburbs to urban cores• Street classification:
– Functional class• Arterial• Collector
– Thoroughfare type• Boulevard• Avenue• Street
• Compatibility and mutual support
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Context Zones – An Organizing System for Thoroughfare Design
Source: Duany Plater-Zyberk and Company
Suburban General Urban Urban Center Urban Core
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CSS vs. Conventional Thoroughfare Design ApproachCSS vs. Conventional Thoroughfare Design Approach
Design criteria primarily based on:
-Community objectives-Functional class-Thoroughfare type-Adjacent land use
Design criteria primarily based on:
-Functional class-Design speed-Forecast travel demand-Level of service
Context: -Suburban-General urban-Urban center-Urban core
Context:-Urban-Rural
CSS ApproachConventional
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Features That Create Context• Land use
– Defines urban activity– Major factor in design criteria
• Site design – Arrangement of buildings, circulation,
parking and landscape– Vehicle or pedestrian-orientation
• Building design– Height, massing shape context– Create enclosure/pedestrian interest
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Land Use
• Major factor in thoroughfare design
• Influences:• Travel demand• Activity in roadside• Width of roadside• On-street parking• Target speed• Freight and transit
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The Urban Roadside – Uses and Activities• Movement of pedestrians• Access to buildings/property• Utilities/appurtenances• Transit stops• Landscaping• Urban design/public art• Sidewalk cafes• Business functions• Civic spaces (plazas, seating)
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Roadside Design
• Roadside zones:– Edge Zone– Furnishings Zone– Throughway Zone (ADA)– Frontage Zone
• Function and dimensions vary by context zone and adjacent land use
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Roadside Design
• Roadside zones on a C-4 Avenue
Context SensitiveNot Context Sensitive
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Roadside Design• Roadside zones• Public places• Placement of roadside
facilities• Public art• Sidewalk width and
function• Pedestrian buffers• Sidewalk/driveway/alley
crossings• Street furniture• Utilities• Landscaping/street trees
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Implementation Challenges• Resistance to change
• Perceived higher cost
• Traditional performance measures (i.e., LOS)
• Lack of clear understanding of CSS– What is a CSS project?
– How to measure success?
• Liability concerns
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Implementation
• ITE to prepare strategy– Review FHWA audit
– Conduct survey
– Develop actions
– Implement• Develop information
• Promote acceptance New York, NY
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