city of phoenix street transportation department 1 7 th avenue and 7 th street reverse lanes reverse...

1 City of PhoenixStreet Transportation Department

7th Avenue and 7th Street Reverse Lanes7th Avenue and 7th Street Reverse Lanes

Reverse Lane Public HearingSunnyslope Community Center

October 6, 2010 Kerry Wilcoxon, P.E.

Reverse Lane Public HearingSunnyslope Community Center

October 6, 2010 Kerry Wilcoxon, P.E.

•OverviewOverview•Operational AnalysisOperational Analysis•Public OpinionPublic Opinion


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

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


7th Street started in 1982 Adams to Dunlap Ave Now McDowell to Dunlap

(7 miles)

7th Avenue &7th Street Central Phoenix

7th Avenue started in 1979 McDowell to Northern Ave.

(6 miles)


³7TH AVE

³7TH ST

Without Reverse Lanes3 Lanes NB each street650 Vehicles/Hour/Lane

Without Reverse Lanes2 Lanes SB each street650 Vehicles/Hour/Lane

7T

H S

T

SR

51

7T

H A

VE

19

TH

AV

E

16

TH

ST1

5T

H A

VE

12

TH

ST

CE

NT

RA

L A

VE

27

TH

AV

E

3R

D S

T

THOMAS RD

OSBORN RD

20

TH

ST

VAN BUREN ST

BL

AC

K C

AN

YO

N F

WY

(I-

17

)

MC DOWELL RD

OAK ST

GLENDALE AVE

DUNLAP AVE

NORTHERN AVE

INDIAN SCHOOL RD

PAPAGO FWY (I-10)

MARYLAND AVE

BETHANY HOME RD

PEORIA AVE

23

RD

AV

E

BUTLER DR

ROOSEVELT ST

3R

D A

VE

ADAMS ST

25

TH

AV

E

CAVE CR

EEK R

D

18

TH

ST

2N

D S

T

BUTLER DR

2N

D S

T


³7TH AVE

³7TH ST

With Reverse Lanes4 Lanes NB

33% Capacity Increase750 Vehicles/Hour/Lane

With Reverse Lanes3 Lanes SB

50% Capacity Increase 750 Vehicles/Hour/Lane

7T

H S

T

SR

51

7T

H A

VE

19

TH

AV

E

16

TH

ST1

5T

H A

VE

12

TH

ST

CE

NT

RA

L A

VE

27

TH

AV

E

3R

D S

T

THOMAS RD

OSBORN RD

20

TH

ST

VAN BUREN ST

BL

AC

K C

AN

YO

N F

WY

(I-

17

)

MC DOWELL RD

OAK ST

GLENDALE AVE

DUNLAP AVE

NORTHERN AVE

INDIAN SCHOOL RD

PAPAGO FWY (I-10)

MARYLAND AVE

BETHANY HOME RD

PEORIA AVE

23

RD

AV

E

BUTLER DR

ROOSEVELT ST

3R

D A

VE

ADAMS ST

25

TH

AV

E

CAVE CR

EEK R

D

18

TH

ST

2N

D S

T

BUTLER DR

2N

D S

T


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

EngineeringStreet Transportation Department

Review current conditions Forecast future demand

Public PerceptionPhoenix Urban Research Lab (PURL) ASU

Survey stakeholders


Street Transportation Dept Crash Rates

Comparison – 7th Ave to 19th Ave

7th St to 16th St Lane Utilization

Percentage of reverse lane utilizationTraffic speeds

Capacity AnalysesTraffic flow modeling


Crash Rate Comparison Methodology

Study Period 2003-2005 (pre-LRT)Streets Examined - 19th Ave, 7th Ave, 7th St,

16th StCrashes involving at least one north/south

vehicle Calculation

Crash Rate = Crashes by Hours

Hourly Traffic Volumes x Length


Crash Rates AM Reverse Lane Hours

Northern Av

Glendale Av

Bethany Home Rd

Camelback Rd

Indian School Rd

Thomas Rd

McDowell Rd

16th

St

7th

St

7th

Av

19th

Av

HI

Segment

Intersection


Northern Av

Glendale Av

Bethany Home Rd

Camelback Rd

Indian School Rd

Thomas Rd

McDowell Rd

16th

St

7th

St

7th

Av

19th

Av

HI

Segment

Intersection

Crash Rates PM Reverse Lane Hours


Northern Av

Glendale Av

Bethany Home Rd

Camelback Rd

Indian School Rd

Thomas Rd

McDowell Rd

16th

St

7th

St

7th

Av

19th

Av

HI

Segment

Intersection

Crash Rates Non-Reverse Lane Hours


Common Type of Crashes2001-2005

Most Common:

All Four Streets Rear End

Most Severe:19th Av Angle 7th Av Angle 7th St Angle/Left Turn16th St Left Turn


Annualized Head-On Crashes2001-2005

16th St – 5.4

crashes/year

7th St – 4.4

19th Ave – 3.4

7th Ave – 1.8


19th Ave – 11.4

crashes/year

7th St – 11.2

16th St – 10.4

7th Ave – 6.0

Annualized Pedestrian Crashes2001-2005


2007 Reverse Lane UtilizationAM Peak Hours

GLENDALE AV

INDIAN SCHOOL RD

27%

25%

THOMAS RD

23%

CAMELBACK RD

28%

BETHANY HOME RD

27%NORTHERN AV

7TH

ST

24%

GLENDALE AV

INDIAN SCHOOL RD

23%

25%

THOMAS RD

18%

CAMELBACK RD

BETHANY HOME RD

N/A

25%

NORTHERN AV

7TH

AV

N

26%

30%

30%


N/A

GLENDALE AV

INDIAN SCHOOL RD

12%

9%

THOMAS RD

6%

CAMELBACK RD

14%

BETHANY HOME RD

N/A

14%

NORTHERN AV

7TH

AV

15%

GLENDALE AV

INDIAN SCHOOL RD

15%

11%

THOMAS RD

9%

CAMELBACK RD

17%

BETHANY HOME RD

16%

18%

NORTHERN AV

7TH

ST

2007Reverse Lane UtilizationPM Peak Hours

N


CurrentAverageSpeedsSouthbound AM

N

GLENDALE AV

INDIAN SCHOOL RD

THOMAS RD

CAMELBACK RD

BETHANY HOME RD

NORTHERN AV

7TH

ST

44MPH

41MPH

40MPH

44MPH

GLENDALE AV

INDIAN SCHOOL RD

THOMAS RD

CAMELBACK RD

BETHANY HOME RD

NORTHERN AV

41MPH

38MPH

42MPH

7TH

AVE


GLENDALE AV

INDIAN SCHOOL RD

THOMAS RD

CAMELBACK RD

BETHANY HOME RD

NORTHERN AV

7TH

ST

GLENDALE AV

INDIAN SCHOOL RD

THOMAS RD

CAMELBACK RD

BETHANY HOME RD

NORTHERN AV

7TH

AVE

CurrentAverageSpeedsNorthbound PM

45MPH

43MPH

41MPH

41MPH

44MPH

41MPH

40MPH

40MPH


Capacity Analysis

Traffic Modeling Existing reverse lanes vs. Hypothetical

conditions Input

Traffic Volume Lane Configuration Signal Timing

Output Travel Time Comparison


0

5

10

15

20

25

30

35

40

45

Min

ute

s

AM Peak Hour Travel Times PM Peak Hour Travel TimesMorning Peak Hour

7:15 – 8:15Afternoon Peak Hour

4:30 – 5:30

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

15

ActualPredicted w/oReverse Lane

29

11

ActualPredicted w/oReverse Lane

19


0

5

10

15

20

25

30

35

40

45

Min

ute

s

AM Peak Hour Travel Times PM Peak Hour Travel TimesMorning Peak Hour7:15 – 8:15

Afternoon Peak Hour4:30 – 5:30

25

44

2030

ActualPredicted w/oReverse Lane Actual

Predicted w/oReverse Lane

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


0

5

10

15

20

25

30

Min

ute

s

Morning Peak Hour7:15 – 8:15

14 min.

SR-51 16th St

11 min.

I-17

25 min.

7th St

15 min.

7th Av

Travel Time ComparisonMorning Peak HourNorthern to McDowell Alignments

10 min.


0

5

10

15

20

25

30

Min

ute

s

Afternoon Peak Hour4:30 – 5:30

15 min.

Travel Time ComparisonAfternoon Peak HourMcDowell to Northern Alignments

SR-51 16th St

12 min.

I-17

20 min.

7th St

11 min.

7th Av

15 min.


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

Source: City of Phoenix Traffic Volume Map Source: MAG Model


85308

85032

85253

85027

85028

85022

85050

85020

8500885009

85301

85018

85043

85029

85024

85

016

85

254

85023

85021

85051

85302

85034

85304

85306

85310

85033

85

303

853

45

8505

38

50

17

85

054

85

015

85035

85

01 4

85

013

85006

85031

85

019

8538

1

85

007

85

012

85382

vw101

Union Hills DrUnion Hills Dr

Glendale AvGlendale Av

Reverse Lane Users(Driver Home Zip Code)


Neighborhood Cut Thru AnalysisCurrent: 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


Reverse Lane UsageBefore and After Light RailDecember 2008

Peak Hour

Before After

Morning 26% 29%

Afternoon 14% 16%


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• Traffic safety on 7th Avenue and 7th Street Traffic safety on 7th Avenue and 7th Street similar to other arterial streetssimilar to other arterial streets

•Reverse lanes carry a substantial amount of Reverse lanes carry a substantial amount of rush hour trafficrush hour traffic

•Removal would result in loss of capacity with Removal would result in loss of capacity with same demandsame demand

•Neighborhood cut-thru routes may shiftNeighborhood cut-thru routes may shift


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


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 Central Phoenix Neighborhoods


Quality-of-Life Study Results North 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

Scenarios:1. Maintain Reverse Lanes as is

2. Permanently Remove Reverse Lanes

3. Maintain Reverse Lane; a. add flashing lights to existing signs

b. add electronic lane control beacons

4. Temporarily remove Reverse Lanes as test


Maintain existing reverse lane operation- Continue to optimize- Continue enforcement

Estimated Cost: $0

Scenario 1 – Keep Reverse Lanes No Change of 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 2 – Permanently remove Reverse Lane operation


Scenario 3a – Keep Reverse Lanes Add 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


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 campaignEstimated Total Cost: $24,510,000

Scenario 3b – Keep Reverse Lanes Add electric lane control signals


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

Scenario 4 – Temporarily remove Reverse Lane as test


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

City of PhoenixStreet Transportation Department

Questions?Kerry [email protected]

[email protected]

city of phoenix street transportation department 1 7 th avenue and 7 th street reverse lanes reverse...

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