green roads for traffic safety: the role of municipalities
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Green Roads for Traffic Safety: The Role of Municipalities. Prepared By: Dr. Wael Yousef (presenting author) & Dr. Ahmed El-kady Urban Planning Department, Faculty of Engineering Al-Azhar University, Egypt. Introduction. - PowerPoint PPT PresentationTRANSCRIPT
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Green Roads for Traffic Safety:The Role of Municipalities
Prepared By:Dr. Wael Yousef (presenting author)
& Dr. Ahmed El-kady
Urban Planning Department, Faculty of EngineeringAl-Azhar University, Egypt
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Introduction
Roads and travel surfaces present
perhaps the largest urban pollution
sources and also one of the
greatest opportunities for green
infrastructure use.
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Green Street Designs:
Green streets can incorporate a
wide variety of design elements
including street trees, permeable
pavements, bioretention, and
swales.
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This bioretention area takes runoff
from the street through a trench
drain in the sidewalk.
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Case Studies
Green Street Pilot Projects:
Portland, Oregon is a national
leader in developing green
infrastructure, Through the 1990s,
over 3 billion gallons of combined
sewer overflow discharged to the
Willamette River every year.
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Vegetated Curb Extensions in
City of Portland
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Green Street Pilot Projects:
The City of Chicago, Illinois has an
alley system that is perhaps the
largest in the world. These 13,000
publicly owned alleys result in
1,900 miles, or 3,500 acres, of
impermeable surfaces in addition
to the street network.
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The Chicago Green Alley Program
is unique because it marries green
infrastructure practices in the
public right-of-way with green
infrastructure efforts on private
property.
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The user-friendly Handbook, which
describes both facets of the
program including the design
techniques and their benefits, is an
award winning document.
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Permeable Pavers and
Permeable Concrete Chicago Alleys
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Chicago’s Green Alley Program uses
the following five techniques:1. Changing the grade of the alley to drain to
the street.
2. Using permeable pavement that allows
water to percolate into the ground.
3. Using light colored paving material that
reflects sunlight.
4. Incorporating recycled materials into the
pavement mix.
5. Using energy efficient light fixtures.
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Conclusions and Recommendations
Elements necessary for a successful
green streets program:
1. Pilot projects are critical.
2. Leadership in sustainability from the top.
3. Buy-in from all municipal infrastructure
departments.
4. Documentation.
5. Public outreach.
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Thank you for your attention
&Waiting for your
Questions