slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
7 th Avenue and 7 th Street Reverse Lanes PowerPoint Presentation
Download Presentation
7 th Avenue and 7 th Street Reverse Lanes

Loading in 2 Seconds...

play fullscreen
1 / 42

7 th Avenue and 7 th Street Reverse Lanes - PowerPoint PPT Presentation


  • 138 Views
  • Uploaded on

7 th Avenue and 7 th Street Reverse Lanes. Overview Operational Analysis Public Opinion. Reverse Lane Public Hearing Sunnyslope Community Center October 6, 2010 Kerry Wilcoxon, P.E. Reverse Lane Overview. Reverse Lane Study Technical Analysis by Street Transportation Current studies

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about '7 th Avenue and 7 th Street Reverse Lanes' - carmela


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

7th Avenue and 7th Street Reverse Lanes

  • Overview
  • Operational Analysis
  • Public Opinion

Reverse Lane Public Hearing

Sunnyslope Community Center

October 6, 2010

Kerry Wilcoxon, P.E.

reverse lane overview
Reverse Lane Overview
  • Reverse Lane Study
    • Technical Analysis by Street Transportation
      • Current studies
    • Quality-of-life analysis by ASU PURL
      • Including differences among neighborhoods
  • Operational Alternatives
background
Background
  • Mayor Hance identified traffic congestion as #1 concern for Phoenicians in 1979
  • Mayor/Council directed staff to develop low-cost solutions
  • Widening or building new streets was not an option
  • Reverse lane selected to accommodate growth in Central Core
7 th avenue 7 th street central phoenix
7th Avenue &7th Street Central Phoenix

7th Street started in 1982

  • Adams to Dunlap Ave
  • Now McDowell to Dunlap (7 miles)

7th Avenue started in 1979

  • McDowell to Northern Ave. (6 miles)
slide5

7TH ST

7TH AVE

Without Reverse Lanes

2 Lanes SB each street

650 Vehicles/Hour/Lane

Without Reverse Lanes

3 Lanes NB each street

650 Vehicles/Hour/Lane

slide6

7TH ST

7TH AVE

With Reverse Lanes

3 Lanes SB

50% Capacity Increase

750 Vehicles/Hour/Lane

With Reverse Lanes

4 Lanes NB

33% Capacity Increase

750 Vehicles/Hour/Lane

original issues
Original Issues
  • Dilemma:
    • Benefit – Increased north/south traffic flow
    • Detriment – Limited turning movements
  • Concerns:
    • Neighborhood cut-through
    • Safety
    • Access (to businesses and neighborhoods)
  • Questions: Are they still needed?

If yes, can they work better?

If no, what are the consequences (costs) of removal?

study approach
Study Approach

Engineering

  • Street Transportation Department
    • Review current conditions
    • Forecast future demand

Public Perception

  • Phoenix Urban Research Lab (PURL) ASU
    • Survey stakeholders
street transportation dept
Street Transportation Dept
  • Crash Rates
    • Comparison – 7th Ave to 19th Ave

7th St to 16th St

  • Lane Utilization
    • Percentage of reverse lane utilization
    • Traffic speeds
  • Capacity Analyses
    • Traffic flow modeling
crash rate comparison
Crash Rate Comparison
  • Methodology
    • Study Period 2003-2005 (pre-LRT)
    • Streets Examined - 19th Ave, 7th Ave, 7th St, 16th St
    • Crashes involving at least one north/south vehicle
  • Calculation

Crash Rate = Crashes by Hours

Hourly Traffic Volumes x Length

crash rates am reverse lane hours
Crash Rates AM Reverse Lane Hours

7th St

7th Av

16th St

19th Av

Northern Av

Glendale Av

HI

Bethany Home Rd

Segment

Camelback Rd

Intersection

Indian School Rd

Thomas Rd

McDowell Rd

crash rates pm reverse lane hours

7th St

7th Av

16th St

19th Av

Northern Av

Glendale Av

Bethany Home Rd

Camelback Rd

Indian School Rd

Thomas Rd

McDowell Rd

Crash Rates PM Reverse Lane Hours

HI

Segment

Intersection

slide13

7th St

7th Av

16th St

19th Av

Northern Av

Glendale Av

Bethany Home Rd

Camelback Rd

Indian School Rd

Thomas Rd

McDowell Rd

Crash Rates Non-Reverse Lane Hours

HI

Segment

Intersection

common type of crashes 2001 2005
Common Type of Crashes2001-2005

Most Common:All Four Streets Rear End

Most Severe:

19th Av Angle

7th Av Angle

7th St Angle/Left Turn

16th St Left Turn

annualized head on crashes 2001 2005
Annualized Head-On Crashes2001-2005

16th St – 5.4 crashes/year

7th St – 4.4

19th Ave – 3.4

7th Ave – 1.8

annualized pedestrian crashes 2001 2005
Annualized Pedestrian Crashes2001-2005

19th Ave – 11.4 crashes/year

7th St – 11.2

16th St – 10.4

7th Ave – 6.0

2007 reverse lane utilization am peak hours

27%

N/A

NORTHERN AV

NORTHERN AV

25%

GLENDALE AV

GLENDALE AV

24%

BETHANY HOME RD

BETHANY HOME RD

28%

7TH ST

7TH AV

CAMELBACK RD

CAMELBACK RD

27%

23%

INDIAN SCHOOL RD

INDIAN SCHOOL RD

25%

25%

THOMAS RD

THOMAS RD

23%

18%

2007 Reverse Lane UtilizationAM Peak Hours

30%

N

30%

26%

2007 reverse lane utilization pm peak hours

16%

N/A

2007Reverse Lane UtilizationPM Peak Hours

NORTHERN AV

NORTHERN AV

18%

14%

N

GLENDALE AV

GLENDALE AV

15%

N/A

BETHANY HOME RD

BETHANY HOME RD

14%

17%

7TH ST

7TH AV

CAMELBACK RD

CAMELBACK RD

15%

12%

INDIAN SCHOOL RD

INDIAN SCHOOL RD

11%

9%

THOMAS RD

THOMAS RD

9%

6%

current average speeds southbound am
CurrentAverageSpeedsSouthbound AM

NORTHERN AV

NORTHERN AV

44

MPH

44

MPH

7TH AVE

7TH ST

GLENDALE AV

GLENDALE AV

BETHANY HOME RD

BETHANY HOME RD

41

MPH

41

MPH

CAMELBACK RD

CAMELBACK RD

38

MPH

40

MPH

INDIAN SCHOOL RD

INDIAN SCHOOL RD

THOMAS RD

THOMAS RD

42

MPH

N

slide20

NORTHERN AV

NORTHERN AV

45

MPH

44

MPH

7TH AVE

7TH ST

GLENDALE AV

GLENDALE AV

CurrentAverageSpeedsNorthbound PM

BETHANY HOME RD

BETHANY HOME RD

43

MPH

41

MPH

CAMELBACK RD

41

MPH

CAMELBACK RD

40

MPH

INDIAN SCHOOL RD

INDIAN SCHOOL RD

41

MPH

40

MPH

THOMAS RD

THOMAS RD

capacity analysis
Capacity Analysis
  • Traffic Modeling
    • Existing reverse lanes vs. Hypothetical conditions
    • Input
      • Traffic Volume
      • Lane Configuration
      • Signal Timing
    • Output
      • Travel Time Comparison
travel times 7 th avenue mcdowell to northern actual and predicted

Morning Peak Hour

7:15 – 8:15

Afternoon Peak Hour

4:30 – 5:30

Travel Times - 7th AvenueMcDowell to Northern - Actual and Predicted

29

19

15

11

Predicted w/o

Reverse Lane

Predicted w/o

Reverse Lane

Actual

Actual

travel times 7th street mcdowell to northern actual and predicted

Morning Peak Hour

7:15 – 8:15

Afternoon Peak Hour

4:30 – 5:30

Travel Times - 7th Street McDowell to Northern - Actual and Predicted

44

30

25

20

Predicted w/o

Reverse Lane

Predicted w/o

Reverse Lane

Actual

Actual

slide24

Travel Time ComparisonMorning Peak HourNorthern to McDowell Alignments

25 min.

15 min.

14 min.

11 min.

10 min.

SR-51

7th St

7th Av

16th St

I-17

Morning Peak Hour

7:15 – 8:15

slide25

Travel Time ComparisonAfternoon Peak HourMcDowell to Northern Alignments

20 min.

15 min.

15 min.

12 min.

11 min.

SR-51

16th St

7th St

7th Av

I-17

Afternoon Peak Hour

4:30 – 5:30

estimated future traffic 2030 thousands of vehicles per day
Estimated Future Traffic - 2030(thousands of vehicles per day)

Source: City of Phoenix Traffic Volume Map

Source: MAG Model

slide28

Neighborhood Cut Thru Analysis

Current:

Left-turn generated cut-thru

Cause: Left-turn restrictions at signals

Occurs: Downstream of signals

  • Primarily left turns into neighborhoods

Predicted:

Congestion generated cut-thru

Cause: Low capacity at signals

Occurs: Upstream and downstream of signals

  • Includes left and right turns into neighborhoods

North

slide30

Traffic CountsDuring Recession

  • 14% reduction in Average Daily Traffic (ADT) at city-wide count stations from 2005 to 2009
  • 30% reduction in ADT on the reverse lane streets from 2005 to 2009
engineering findings
Engineering Findings
  • Traffic safety on 7th Avenue and 7th Street similar to other arterial streets
  • Reverse lanes carry a substantial amount of rush hour traffic
  • Removal would result in loss of capacity with same demand
  • Neighborhood cut-thru routes may shift
asu phoenix urban research lab purl stakeholder survey
ASU Phoenix Urban Research Lab (PURL) – Stakeholder Survey

Goal: Determine how stakeholders view the lanes and how they would change them (improve, eliminate, preserve)?

Process

  • Identify stakeholders (drivers, peds, bicyclists, residents, business owners, etc.)
  • Conduct sample-based surveys of stakeholders
  • Conduct focus groups of stakeholder groups
  • Analyze survey and focus group responses
quality of life study results central phoenix neighborhoods
Quality-of-Life Study ResultsCentral Phoenix Neighborhoods
  • Very few satisfied with business-as-usual
    • Main quality-of-life concerns:
      • Reverse lanes inhibit access
      • Most feel lanes are unsafe
      • Driver confusion
    • Would recommend:
      • Keep the lanes & add electronic signage
      • Eliminate the reverse lane on 7th Street/7th Avenue
      • Little support to keep lanes with no changes
quality of life study results north central neighborhoods
Quality-of-Life Study ResultsNorth Central Neighborhoods
  • More satisfied with operation than other stakeholders
    • More than 50% say:
      • Lanes are safe and reduce travel time
      • Reverse lane signs are understandable
    • Would recommend:
      • Enforcement and more left turn opportunities
      • Sign upgrades e.g., electronic signs
operational alternatives
Operational Alternatives

Scenarios:

  • Maintain Reverse Lanes as is
  • Permanently Remove Reverse Lanes
  • Maintain Reverse Lane;
    • add flashing lights to existing signs
    • add electronic lane control beacons
  • Temporarily remove Reverse Lanes as test
slide36

Scenario 1 – Keep Reverse LanesNo Change of Operation

Maintain existing reverse lane operation

- Continue to optimize

  • Continue enforcement

Estimated Cost: $0

slide37

Scenario 2 –Permanently remove Reverse Lane operation

Remove reverse lanes on both streets

- Remove existing signs and mast arms

- Install new turn arrows at major intersections

- Re-evaluate signal timing

- Public education campaign

Estimated Total Cost:

Without sign pole removal $630,000

With sign pole removal $955,000

scenario 3a keep reverse lanes add flashing lights to existing signs
Scenario 3a – Keep Reverse LanesAdd flashing lights to existing signs

Install flashing lights to existing overhead signs

  • Supply power to existing sign poles
  • Install flashing beacons and wireless communication equipment
  • Public education campaign

Estimated Total Cost: $3,850,000

slide39

Scenario 3b – Keep Reverse LanesAdd electric lane control signals

Install additional new red X – Green Circle lane control signals, additional poles and new signs

  • Install additional signs and sign posts
  • Supply power to mast arms
  • Install supporting control equipment
  • Public education campaign

Estimated Total Cost: $24,510,000

slide40

Scenario 4 –Temporarily remove Reverse Lane as test

Remove reverse lanes on 7th Avenue or 7th Street

- Remove existing signs

- Public education campaign

Estimated Total Cost:

7th Avenue: $65,000

7th Street: $70,000

ad hoc committee schedule
Ad-Hoc Committee Schedule
  • Aug - Sept Task Force Meetings
  • Sept - Oct Public Meetings
    • Reverse lane survey on-line (until 10/31/2010)
  • November Task Force Meeting
    • Develop Recommendations
  • December Presentation to City Council

Reverse Lane Survey:

http://lists.phoenix.gov/subscribe/survey?f=217

questions kerry wilcoxon 602 262 4613 kerry wilcoxon@phoenix gov reverse lanes@phoenix gov

Questions?Kerry Wilcoxon602-262-4613kerry.wilcoxon@phoenix.govreverse.lanes@phoenix.gov