South Bay Corridor Study and Evaluation for Dynamic ...€¦ · Evaluation for Dynamic Corridor...
Transcript of South Bay Corridor Study and Evaluation for Dynamic ...€¦ · Evaluation for Dynamic Corridor...
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South Bay Corridor Study and Evaluation for Dynamic Corridor Congestion Management (DCCM)
Metro Streets and Freeways Subcommittee Meeting October 17, 2013
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1. DCCM Background
2. Project Overview and Schedule
3. Corridor Study Overview and Results
4. ConOps and Need for Stakeholder Engagement
5. Next Steps
Agenda
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Problem Statement
Transit
Freeways
Arterials
Man
aged
Lanes/To
lls
Eme
rgency
Resp
on
ders
Systems managed independently, little to no coordination
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The Integrated Corridor Management (ICM) Approach to Congestion Reduction
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Problem: Surface transportation congestion Traditional approach: Optimization of individual networks (freeway, arterials, transit,
etc. each considered separately)
ICM approach: Integrated corridor-wide operations to optimize entire system (not
just individual networks)
USDOT Integrated Corridor Management Vision
ICM Manages: • Total Corridor
Capacity • All modes and
routes together • Corridor as a
single system
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1. Improved corridor throughput
2. Reduced impact of incidents on freeways and arterials
3. Enhanced performance measurement capability
4. Improved information sharing
5. Opportunity for regional stakeholders to participate in developing a model for automated operations
6. Better informed travelers
DCCM Benefits and Opportunities
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DCCM Freeway/Arterial Coordination Example
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Scenario
• Accident blocks several lanes on NB I-110 during morning rush hour
• Drivers exit to Figueroa and Vermont to detour around the incident
Current response
1. Arterial signal system
unaware of increased
arterial demand
2. Fixed/time-of-day signal
timings not set up to
accommodate new
demand
3. Traffic backs up on
arterials, turn pockets,
and freeway off-ramps
DCCM-enabled response
1. Freeway management system
alerts arterial system to
increased demand
2. Signal system automatically
implements agreed-upon
signal timing plan designed for
the scenario
3. Traffic flows efficiently along
parallel arterials around the
incident with minimized
impact to the arterial network
I-110
Ve
rmo
nt
Figu
ero
a
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Who Else is Implementing DCCM Solutions?
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Integrated corridor management systems are rapidly being implemented on major corridors across the country:
Seattle (I-5)
San Diego (I-15)
Oakland (I-80) (I-880)
Portland (I-216)
Minneapolis (I-395)
Denver (I-75)
Dallas (US-75)
Houston (I-10)
San Antonio (I-10)
Montgomery County (I-270)
San Mateo (US-101)
Los Angeles (I-210)
Phoenix (I-10)
Detroit (I-75)
Miami-Dade (I-95)
Southwest Penn.
Milwaukee-Chicago
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1. Identify a pilot corridor on which to deploy a DCCM freeway-arterial coordination system (Aug 2013)
2. Develop a concept of operations to guide implementation (Sep-Dec 2013)
3. Develop Memorandums of Understanding (MOUs) among all involved stakeholders (Jan-Jun 2014)
4. Conduct a before/after system evaluation for the initial pilot project (2014-2015)
South Bay DCCM Project Scope and Schedule
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We are here
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Task 1: Corridor Study
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Six South Bay corridors evaluated
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Task 1: Corridor Study – Evaluation Criteria
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Five categories of evaluation criteria:
1. System demand
2. Physical infrastructure
3. ITS infrastructure
4. Institutional coordination challenges
5. ICM readiness
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Task 1: Corridor Study – Preliminary Ranking
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#1 #2
#3
#4
#5 #6
I-110 has emerged as the top rated candidate corridor for DCCM pilot; to be a test case and a model for implementation on the other corridors
• Improve Ramp/Signal Operations
• Improve Ramp and Signal Communications
• Fill in Detection Gaps
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Project Overview (2)
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Investigate the most effect, pro-active and vibrant methods for DCCM: • Freeway Ramp Meter/Arterial Signal Coordination Concepts • Develop DCCM coordination with Arterial Traffic Signal System • Queue End Warning (QEW) • Traffic Signal Control, including adaptive • Junction Control • Traffic Demand Management • Other Active Traffic Management Strategies • Multimodal Decision Support Systems (DSS) • Predictive travel time calculations • Accident response strategy assessments • Urban and interurban congestion management
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Next Steps
1. Stakeholder outreach to develop ConOps
– Workshops at SCCCOG offices or Caltrans
– Face-to-Face meetings
– Webinars
– Phone Interviews
2. Develop Concept of Operations Document
– Becomes blueprint for future similar projects in South Bay Region
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Concepts to be addressed
• Primary – Ramp Meter/Traffic Signal Coordination
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• Reduce impacts of freeways on arterials • Improve ramp metering to avoid queue backup • Alleviate safety issues
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Queue End Warning
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Typical queuing conditions:
• Exit ramp spillback
• Construction zone queues
• Fog (visibility)
• Traffic Incidents
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Junction Control
• Caltrans Dynamic Lane Management System (DLMS)
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Corridor Management Concepts
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I-15 ICMS - Rancho Bernardo Transit Center
BRT
Station
Main Lanes
Managed
Lanes Direct Access
Road to Arterial
Park-
and-Ride
Drop
Ramps
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Adaptive Ramp Metering
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Lane Management System 1
I-80 ICM (California)
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Variable Speed Assignment Signs (VASS)
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Queue Warning
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I-80 ICM (California)
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Transportation Demand Management (TDM)
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Example MTD measures include: • Ridesharing • Pedestrian-oriented Design elements • Parking Management • Improving public transportation infrastructure,. • Subsidizing transit costs • Bicycle-friendly facilities • Providing active transportation (AT) facilities
including bike lanes and multi-use trails. • Flex-time work schedules • Congestion pricing tolls during peak hours. • Road space rationing by restricting travel based on
license plate number, at certain times and places. • Workplace travel plans • Road space reallocation, • Time, Distance and Place (TDP) Road Pricing, where
road users are charged based on when, where and how much commuters drive.
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Questions