connected corridors: integrated corridor management (icm...

François Dion / Ethan Xuan Lisa Hammon / Joe Butler Feb 19, 2013

Connected Corridors: Integrated Corridor Management (ICM)

Site Selection Summary

LA Metro / Caltrans Meeting

Outline

ICM Objectives

Potential Corridors

I-710 Corridor Evaluation

2

ICM Objectives 3

Integrated Corridor Management

A key ICM objective is to achieve operational improvements along transportation corridors through: Operational integration of available transportation systems

Freeways Arterials Transit services Bikeways/pathways (were relevant)

Enhanced coordination among corridor stakeholders Caltrans Local transportation jurisdictions Transit agencies California Highway Patrol / Local law enforcement / First responders Information service providers

4

Corridor Selection Parameters 5

Key Corridor Selection Criteria

Traffic Detection Real-time traffic data from freeway mainline?

Real-time traffic data from on/off ramps?

Real-time traffic data from surrounding arterials?

Freeway control capabilities Ability to dynamically change ramp metering rate?

Arterial control capabilities Ability to control signal timing plan in effect or to dynamically adjust

signal timing parameters?

6

Key Corridor Selection Criteria

Rerouting opportunities Ability to use CMS message to influence routing decisions?

Ability to use transit as an alternate transportation mode? (available carrying capacity? Parking availability?)

Ability to use parallel arterials as diversion routes? (available spare capacity?)

Collaboration opportunities Number of jurisdictions involved?

Potential for collaboration among corridor stakeholders?

7

I-710 Corridor Analysis 8

Corridor Geometry 9

Long Beach

Santa Fe

Cherry

Atlantic

Fire

ston

e

Flor

ence

Slau

son

Alon

dra

Garfield

Del

Am

o

Cars

onWill

ow /

Sepu

lver

a

Paci

fic C

oast

Hw

y

Anah

eim

Arte

sia

Rose

cran

s

Com

pton

/ So

mer

set

Impe

rial

Hw

y

Vern

on

Was

hing

ton

38th

St

Freeway

ArterialMetro Blue LineMetro Green LineLight Rail Stop

Freeway Interchange

Paramount

Corridor boundaries proposed by LA Metro

N

Not to scale

Atlantic

Wilmington

Gag

e

Santa Fe

War

dlow

I-710 – Congested Sections 10

Fire

ston

e

Flor

ence

Slau

sonAlon

dra

Impe

rial

Hw

y

Rose

cran

s

Som

erse

t

Del

Am

o

Cars

onSepu

lved

a

Paci

fic C

oast

Anah

eim

Arte

sia

Vern

on

Santa Fe

Cherry

Atlantic

Long Beach

Garfield

Fire

ston

e

Flor

ence

Slau

sonAlon

dra

Impe

rial

Hw

y

Rose

cran

s

Som

erse

t

Del

Am

o

Cars

onSepu

lved

a

Paci

fic C

oast

Anah

eim

Arte

sia

Vern

on

Santa Fe

Cherry

Atlantic

Long Beach

GarfieldCongested freeway sections

AM Peak

PM Peak

I-710 – Speed Contours 11

Mar 2012

Oct 2012

Average, Weekdays

Only

I-710 SB I-710 NB

SR-9

1

I-105 I-5

SR-6

0

Atla

ntic

Flor

ence

I-405

Will

ow

I-405

Will

ow

Nea

r Im

peria

lFi

rest

one

Atla

ntic

Del A

mo

SR-9

1Lo

ng B

each

Tim

e

80 mph

70 mph

60 mph

50 mph

40 mph

30 mph

20 mph

10 mph

0 mph

Flor

ence

Alon

dra

Som

mer

set

I-105

Fire

ston

e

49% observed58% observed

49% observed50% observed

Tim

e

I-710 – Bottleneck at Atlantic On-Ramp 12

Major bottleneck created by truck traffic from Atlantic on-ramp on I-710 North

Need for trucks to change 3 lanes in less than 1 mile to access I-5 North

Ramp grade and tight curves result in low truck entry speeds

Likely difficult to change truck traffic pattern

I-710 – Accident Statistics 13

10.8 accidents/day I-710 N

I-710 S 9.6 accidents/day

Average number of accidents per day All days in 2012

Long Beach to I-5


Time of occurrence Predominantly during the

afternoon peak hour (1 PM to 6 PM)

Postmile (abs)

Post

mile

(abs

)


Predominant locations Between SR-91 and

Florence

Around Atlantic on-ramp

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 250

50

100

150

200

250

300

350

400

450

Abs Postmile [miles]

Freq

uenc

y [#

inci

dent

s/m

ile]

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 250

50

100

150

200

250

300

350

400

Abs Postmile [miles]

Freq

uenc

y [#

inci

dent

s/m

ile]

I-710 NB

I-710 SB

I-710 – Surrounding Congestion 16

Observed Speeds Tuesday, February 12, 2013, 8:00 AM

Observed Speeds Monday, February 11, 2013, 6:00 PM

I-710 – Ramp Metering 17

Atlantic

State

Santa Fe

Will

ow /

Sepu

lver

a

a

Fire

ston

e

Flor

ence

Slau

son

Alon

dra

Garfield

Del

Am

o

Cars

on

Anah

eim

Arte

sia

Rose

cran

s

Som

erse

t /

Com

pton

Impe

rial

Hw

y

Vern

on

Was

hing

ton

Metered InterchangePartially Metered InterchangeUnmetered Interchange

Long Beach

Santa Fe

Cherry

Atlantic

38th

St

Paci

fic C

oast

Hw

y

War

dlow

Paramount

Wilmington

Freeway


N

Not to scale

Most ramps north of SR-91 metered

I-710/I-105 Interchange Metered

I-710 –Mainline Detector Health 18

North

I-710 – Ramp Detector Health 19

North

Arterials – Signalized Intersections 20

Santa Fe

Fire

ston

e

Flor

ence

Gag

e Slau

sonAlon

dra

Santa Fe

Cherry

Atlantic

Long Beach

Del

Am

o

Cars

on

Paci

fic C

oast

Anah

eim

Arte

sia

Rose

cran

s

Som

erse

t /

Com

pton

Impe

rial

Hw

y

Vern

on

Was

hing

ton

Fully Metered Interchange

Unmetered InterchangeSignalized Intersection

Partially Metered Interchange

STOP-controlled intersectionRoundabout

Sepu

lved

a /

Will

ow

38th

StWar

dlow

788 signalized intersections(275 in shaded area)

State

Paramount

N

Not to scale 275 signalized intersection in shaded area

788 signalized Intersection on map

Atlantic Avenue

Long Beach Boulevard

Garfield Avenue

Arterials – Traffic Signal Controllers 21

South Gate ASC/2 at Salt Lake, Michigan, Firestone ASC/3 at Tweedy ASC-8000 at Southern

Lynwood LACO-4E (Pending)

Compton ASC/3

LA County LACO-4E

South Gate LACO-4E at Tweedy ASC/3 at Willow Place, Liberty St, Firestone ASC/2 at others

Lynwood LACO-4E (Pending)

Compton ASC/3

South Gate ASC/3 at Firestone Blvd, Firestone Place, Target Store ASC/2 at others

Arterial – Congestion Assessment 22

Fire

ston

e

Flor

ence

Slau

sonAlon

dra

0.855 0.928 0.8990.783

0.8170.716

0.697

0.888

0.562

0.760

0.705 0.798 0.8620.912

0.869

0.8550.909

0.731 0.9270.804

0.855

0.638 0.824 0.950

0.786 0.986

0.889 0.9820.801 0.782

0.754

0.625

0.676

0.696

0.932

0.455

0.542

0.3890.668

0.4810.811

0.9030.734 0.847

0.649

0.467 0.465

0.869

0.633 0.839 0.852

0.767 0.7820.622

0.600

0.637

0.569

0.802

0.747

0.7000.655

0.630

0.800

0.626

Intersection Capacity Utilization (ICU) / Level of Service (LOS)AM Peak

Impe

rial

Hw

y

Rose

cran

s

Som

erse

t

Del

Am

o

Cars

on

Paci

fic C

oast

Anah

eim

Arte

sia

Vern

on

Was

hing

ton

Santa Fe

Cherry

Atlantic

Long Beach

Garfield

0.8920.773 0.688 0.790

0.868

0.700

0.564

0.756

0.5240.626

1.04

Color = ICU LOS

ICU LOS ALOS BLOS CLOS DLOS ELOS FLOS G,H

Congested freeway sections

Results based on Synchro optimized timings based on 2008/2009 flow data

Analysis assumptions:- 60-s cycle at ramp signals

- 100-s cycle at all other intersections

Sepu

lved

a /

Will

ow

N

Not to scale

War

dlow


Fire

ston

e

Flor

ence

Slau

sonAlon

dra

0.774 0.677 0.6850.586

0.7390.673

0.595

0.614

0.508

0.637

0.695 0.652 0.8110.614

0.502

0.7570.878

0.7510.646

0.606

0.712 0.706

0.576 0.703

0.689 0.8390.768 0.742

0.687

0.541

0.467

0.712

0.377

0.409

0.2940.544

0.3770.539

0.668 0.5540.609

0.373

0.707

0.510

0.542 0.5140.516

0.538

0.651

0.424

0.877

0.797

0.3710.605

0.402

0.571

0.3390.410

0.572

Impe

rial

Hw

y

Rose

cran

s

Som

erse

t

Del

Am

o

Cars

on

Paci

fic C

oast

Anah

eim

Arte

sia

Vern

on

Was

hing

ton

Santa Fe

Cherry

Atlantic

Garfield

0.833 0.681 0.760

0.371

0.504

0.795

0.728

0.6210.780

0.567

Intersection Capacity Utilization (ICU) / Level of Service (LOS)Midday Peak

1.04

Color = ICU LOS






Midday Peak

Sepu

lved

a /

Will

ow

N

Not to scale

War

dlow

Long Beach


Fire

ston

e

Flor

ence

Slau

sonAlon

dra

0.931 0.984 0.8740.806

0.8530.868

0.692

0.930

0.743

0.846

0.759 0.770 0.9760.879

0.820

0.9870.975

0.8930.795

0.939

0.899 0.972 1.003

0.837 0.986

0.918 1.1070.903 0.908

0.9220.799

0.806

0.681

0.956

0.520

0.587

0.5480.752

0.4740.757

0.828 0.7260.807

0.612 0.495

0.805

0.719 1.058 0.899

0.916 0.8200.865

0.556

0.721

0.453

1.078

0.992

0.9870.861

0.538

0.939

0.5600.729

0.717

Impe

rial

Hw

y

Rose

cran

s

Som

erse

t

Del

Am

o

Cars

on

Paci

fic C

oast

Anah

eim

Arte

sia

Vern

on

Was

hing

ton

Santa Fe

Cherry

Atlantic

Garfield

0.9310.972 0.841 0.899

0.987

0.675

0.950

0.816

0.857

0.845

1.04

Color = ICU LOS



Intersection Capacity Utilization (ICU) / Level of Service (LOS)PM Peak




Sepu

lved

a /

Will

ow

N

Not to scale

War

dlow

Long Beach

Traffic Detection - Arterials

Limited traffic detection on arterials within central section of corridor

Sensys sensors being deployed along Long Beach Blvd

25

Fire

ston

e

Flor

ence

Slau

son

Alon

dra

Santa Fe

Garfield

Del

Am

o

Cars

onWill

ow

/ Sep

ulve

ra

Paci

fic C

oast

Hw

y

Anah

eim

Arte

sia

Rose

cran

s

Com

pton

/ So

mer

set

Impe

rial

Hw

y

Vern

on

Was

hing

ton

Bam

dini

/ 38th

St

Freeway


NNot to scaleFreeway Interchange

Paramount

Long Beach SensysDeployment Project

War

dlow

Long Beach

Cherry

Atlantic

Light Rail and Rapid Bus Services 26

760

Fire

ston

e

Flor

ence

Slau

son

Alon

dra

Santa Fe

Garfield

Del

Am

o

Cars

onWill

ow /

Sepu

lver

a

Paci

fic C

oast

Hw

y

Anah

eim

Arte

sia

Rose

cran

s

Com

pton

/ So

mer

set

Impe

rial

Hw

y

Vern

on

Was

hing

ton

Bam

dini

/ 38th

St

Paramount

FreewayArterialMetro Blue LineMetro Green LineLight Rail StopParking Facility and Number of SpacesMetro Rapid Bus LineSignal Priority Equipped

P 899

Changeable Message Signs (CMS)N

Not to scale

762

To Downtown Los Angeles

To Downtown Passadena


30 minGreen Line – Downtown LA

War

dlow

Long Beach

Cherry

Atlantic

Park and Ride / Information Services 27

Long Beach

760

Fire

ston

e

Flor

ence

Slau

son

Alon

dra

Cherry

Atlantic

Garfield

Del

Am

o

Cars

on

Paci

fic C

oast

Hw

y

Anah

eim

Arte

sia

Rose

cran

s

Impe

rial

Hw

y

Vern

on

Was

hing

ton

Bam

dini

/ 38th

St

Paramount

P 899P 115

P 367

P 287

P 335

P 63 P 115

P 646

P 414FreewayArterialMetro Blue LineMetro Green LineLight Rail StopParking Facility and Number of Spaces

Metro Rapid Bus LineSignal Priority Equipped

P 899

Changeable Message Signs (CMS)

N

Not to scale

762


To Downtown Passadena


War

dlow

99% Parking Facility Average Occupancy

83%

44%

23%

108%

Will

ow /

Sepu

lver

a

Com

pton

/ So

mer

set

Santa Fe

Positive Aspects

Corridor of national/regional significance

Traffic sensors Presence of multiple PeMS stations along freeway mainline PeMS stations already installed on most on/off ramps

Ramp metering Ramp meters on almost all interchanges north of I-405 Fully metered freeway-freeway interchange (I-105), with potential of metering two

additional freeway-freeway interchanges (SR-91 and I-405)

Arterial Traffic signal control Existing Traffic Management Centers in the cities of Southgate and Compton Efforts under way to implement centralized traffic signal status monitoring within local

jurisdictions (expected completion sometime in 2014) Sensys traffic sensors currently being deployed along a section of Long Beach

Boulevard (anticipated completion in summer 2013)

28

Positive Aspects

Transit Corridor parallel to Metro Blue Line and crossed by Metro Green Line Two Metro Rapid bus lines within corridor, one going to downtown Los Angeles and the

other to Pasadena Transit signal priority currently active or available on some arterials within the corridor

Other Significant sections of the I-710 freeway have recently been rehabilitated

29

Negative Aspects

Freeway traffic sensing PeMS stations health along ramps (based on February 2012 data)

Freeway congestion

Congestion on surrounding freeways makes it difficult to develop effective alternate routes

Truck traffic is currently growing faster than the general traffic and is expected to nearly triple by 2035. This creates an environment in which the ideal traffic management strategies are likely to change over time

Some of the bottlenecks are due to causes that may be difficult to address (for instance, congestion along I-710 North in the AM peak)

Portion of congestion likely attributable to the high frequency of accidents along I-710

Arterial traffic control Limited real-time traffic detection along arterials within the central portion of the corridor

Not all cities may have the ability to centrally monitor and control traffic signal operations

Cities to the north of the corridor may not have the necessary resources to support the deployment and operation of an ICM system

30

Negative Aspects

Rerouting opportunities

Lack of available capacity at many key intersections, particularly close to the freeway, may create significant difficulty in using the arterials as detour routes

High density of traffic signals along surrounding arterials (typically, 4 to 5 signals per mile) may impose long travel times and reduce their attractiveness

Motorists may not be willing to travel 2 to 4 miles along congested arterials to reach a light-rail station along the Metro Blue line

Political difficulty of rerouting truck traffic through residential areas

Transit

Limited parking availability at most light-rail stations along the corridor (particularly along the Blue Line) will limit mode transfer opportunities

Jurisdictional environment

Implementation of traffic management strategies on arterials surrounding the corridor will require coordination of activities among multiple local jurisdictions

31

Negative Aspects

Uniqueness of corridor

The high volume of trucks and high number of accidents involving trucks make the I-710 an atypical corridor. As a result, an ICM deployment on I-710 may have limited replication capability elsewhere.

32

Remaining Questions

Traffic detection and control capabilities

Traffic signal control and detection in City of Long Beach?

Ability to communicate will all controllers along an arterial?

Availability of real-time traffic counts (when? where?)

Accuracy of URS intersection capacity analysis

2008/09 data

Analysis based on single-day traffic flow counts

Changes in signal timing/controller since analysis?

Intersection geometrical changes since analysis?

33

Alternate Corridor Options 34

Potential Alternate Corridors 35

District 8

District 12

District 7

Corridor with potential parallel arterial and alternate transit Corridor with potential parallel arterial

connected corridors: integrated corridor management (icm...

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