1 traffic-intolerant bicyclists and boston’s greenway network peter g. furth professor department...
TRANSCRIPT
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1
Traffic-Intolerant Bicyclists
and
Boston’s Greenway Network
Peter G. Furth
Professor
Department of Civil & Environmental Engineering
Northeastern University
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Bicycle Ridership Depends on Traffic Stress
degree of traffic stress
Rid
ers
Unimproved
Low stress facility draws high ridership
Many
improvements
serve only traffic-
tolerant riders
X3
X2X1
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A Test:
Could we design a network for Brookline
intended for traffic-intolerant cyclists?
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Proposed Safe Routes Network, Brookline, MA
• Accepted in 2007 as plan by Brookline Transportation Board
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Expanding the Toolbox of Low-Stress Facility Types
* New criteria developed for
traffic-intolerant riders
5. Contraflow lane
6. No-Passing-Bikes zone
7. Separated paths or “Cycle tracks”
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BICYCLE CONTRAFLOW• One-way for cars, two-way
for bikes
• Excellent safety record
• Bikes do it anyway!
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Recommended Contraflow Site (observe contraflow cyclist)
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Recommended No-Passing-Bikes Zone
(Carlton St.)
• Self-enforcing
• Removes stress from cyclists
• Removes pressure motorists feel to pass unsafely
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Cycle Track or Separated Path
• Stress-free between intersections
• Design for safe crossings and endpoints
• Separation is vital on high-speed roads
Cycle track on Vassar St., Cambridge
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Refuge Cycle TracksCarry routes through dangerous intersections
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Could We Design a “Safe Routes” Network for Brookline? YES.
• Greenways
• Quiet Local Streets, 15 of them with contraflow
• 5 No-Passing-Bikes Zones
• 4 Refuge Cycle Tracks at busy intersections
• Separated paths along high speed arterials
• Implementation Schedule???
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Boston’s Developing Greenway Network
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Arborway: 8 lanes of highway, no path
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Jamaica Pond
Kelley Circle
Murray Circle
Arboretum
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Engineering Students’ Design, 2008
14
Regional Traffic Concentrated in Inner Raodway
Continuous Paths in East & West Side Medians
Net New Greenspace = 4.45 Acres
Newly Accessible Greenspace = 5.60 Acres
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Greenway Segments (2+ mi long?)
Arborway
Route 9 Crossing
Sears Rotary
“Harbor-Ride”
S. Bay / Harbor Trail
Harbor Walk
Southampton & Old Colony
Watertown Branch
Community Path
Charlesgate Path World
Series Path
Grand Junction
Earheart Dam / Bike to the Sea
Downtown Boston
South Boston
UMass Boston
Dorchester
CambridgeWatertown
Somerville
Charlestown
Jamaica Pond
Brookline
Forest Hills
Brighton
Fresh Pond
Missing Mile Bridges
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World Series Path
SW Corridor (at Ruggles) to Back Bay Fens
50% on NU campus
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SW C
orridor
Ruggles Station
Huntington Ave
MFA
NU & first World Series site (1903)
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Shifted median
Back Bay Fens
Mass. Pike
Charles River Mass.Ave.
Muddy River
Comm. Ave.
CHARLESGATE PATH
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Proposed ConditionsThis is a rendering of what the southbound lanes of the
Bowker Overpass will look like.
Existing ConditionsThis is an image taken from the Bowker/Boylston
Intersection looking at the southbound lanes of the Bowker Overpass.
Moving The MedianMoving The Median
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Down & Across the On-Ramp from Comm. Ave.
– Ramp Narrowed to 1 lane for entering Bowker Overpass
– Signalized crossing, coordinated w/ Comm Ave
– No negative traffic impact
– ADA ramp to Charlesgate West and Newbury St.
Comm Ave
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Coming down to Commonwealth Ave.
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Shifted curb line on Beacon Street crossing the Muddy
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Proposed Path Layout: Connections AND a New 2.5 - Acre Park
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LMA
MGH
E. Cambridge
BUBack Bay
NU
MIT
JP
BMC
Harvard Sq
Allston/Bri
U Mass
S Boston
Roxbury
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Boston’s Future Greenway Network (in part)!
www.civ.neu.edu