TYLER STREET AND POLK STREET (CANTY STREET TO PEMBROKE AVENUE) - - PowerPoint PPT Presentation
TYLER STREET AND POLK STREET (CANTY STREET TO PEMBROKE AVENUE) PROPOSED TWO-WAY CONVERSION PROJECT Prepared by City of Dallas Public Works Department City of Dallas Planning & Urban Design Department City of Dallas Department of Street
(CANTY STREET TO PEMBROKE AVENUE)
Prepared by
City of Dallas Public Works Department City of Dallas Planning & Urban Design Department City of Dallas Department of Street Services
Hayden Consultants, Inc. April 21, 2016
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Replace existing traffic signals with new state-of-the-art traffic
Striping/signage improvements
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Traffic calming Provide healthier/more walkable neighborhood
Improved access and circulation
Provide landscaped roundabout at north end of existing couplet Provide landscaping at south end of existing couplet
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Tyler Street Polk Street 12th Street Jefferson Blvd Davis Street 10th Street
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Tyler Street Polk Street 12th Street Jefferson Blvd Davis Street 10th Street Tyler Street One-way Northbound Polk Street One-way Southbound
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Tyler Street Polk Street 12th Street Jefferson Blvd Davis Street 10th Street
New Traffic Signal at Southern Tyler/Polk Junction New Roundabout at Northern Tyler/Polk Junction Modify/Replace existing traffic signals
Tyler Street Two-way traffic Polk Street Two-way traffic
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BENEFITS
Roundabouts are becoming more common in the United States and the state of Texas due to their many benefits.
How to get around
Safer
Efficient
yielding for pedestrians in crosswalks Roundabouts reduce delay by allowing motorists to yield rather than stop at a red light. They can also handle higher traffic volumes, which helps vehicles get through quicker.
Roundabouts are safer than other intersections because severe head-on and left-turn crashes do not occur. Other safety benefits include slower speeds and the one-way circulating traffic.
Slow down
Read advance signing and choose correct lane
Yield to traffic in all lanes on your left before entering
Stay in your lane to your exit
Economical
Accident reduction at roundabouts Reducing driver delay saves time and fuel. Eliminating signals also saves approximately $3,000 to $5,000 per year in maintenance and energy costs.
52%
Green
9 %
Roundabouts are proven to reduce overall accident rates in Wisconsin by approximately 9%, and reduce severe crashes by 52%. The 2011 Study by the UW Traffic Operations & Safety Laboratory reported zero fatal crashes. Roundabouts reduce fuel consumption and vehicle pollution
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because vehicles are not idling at a red light.
INJURY
and bicyclists at roundabouts as compared to signalized intersections. The center island of a roundabout provides an opportunity to beautify the location with landscaping. Flowers, trees, or even simple green space can be placed in the center
a roundabout, making the intersection aesthetically pleasing.
Roundabout Myths vs. Facts
Yield ►
Myth: Roundabouts are not
The “Golden Rule”
pedestrian and bicyclist friendly.
Fact: Traffic circles have high-speed entries, variable yield rules, low capacity, and many high-speed
confusing to drive. When you enter the roundabout, you Fact: There are statistically fewer pedestrian and bicycle crashes at roundabouts than at signalized
yield to pedestrians in the crosswalks, while refuge islands provide a space for pedestrians in the middle of each crossing so pedestrians only cross one direction
must yield to circulating traffic. Roundabouts require motorists to yield
high, and crashes are few and minor. They are designed to be easy to use and provide a higher level of driver safety. Yield means the other drivers in the circle have the right of way. A motorist approaching a roundabout should wait for a safe gap in traffic before entering.
In addition, studies show fewer accidents involving pedestrians
roundabouts are the same thing.
Myth: Traffic circles/rotaries and
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40% Polk Street Tyler Street 60%
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60% 40% Polk Kings Davis Tenth Jefferson Twelfth Tyler Signalized intersections PM Southbound Split 60% 40% AM Northbound Split Roundabout
Level of Service (LOS) is a qualitative measure describing operational conditions
within a traffic stream, based on service measures such as speed and travel time, freedom to maneuver, traffic interruptions, comfort, and convenience.
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(LOS) Average Control Delay per Vehicle (seconds per vehicle) General Description A Less than or equal to 10 seconds Free Flow B 10-20 seconds Stable flow (slight delays) C 20-35 seconds Stable flow (acceptable delays) D 35-55 seconds Approaching unstable flow (tolerable delay, occasionally wait through more than one signal cycle before proceeding) E 55-80 seconds Unstable flow (intolerable delay) F Greater than 80 seconds Forced flow (jammed)
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~ Three month process Interdepartmental staff review to gather information from various City
Community meeting with the property owners to discuss amendment and
Item considered and voted on by three bodies: 1) City Plan Commission
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City Plan Commission will hold a public hearing to solicit citizen
City Council will hold a public hearing and take into consideration
If City Council approves the amendment to the Thoroughfare Plan,
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1st Public Meeting – April 7, 2015 2nd Public Meeting – April 21, 2016 CPC Transportation Committee – May 5, 2016 City Plan Commission – May 19, 2016 City Council – June 22, 2016
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Thoroughfare Amendment Plan Process: April 21 - June 22, 2016 Tyler/Polk Engineering Design: Summer 2016 - Winter 2016 Tyler/Polk Construction: Spring 2017 - Spring 2018
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