integrated corridor management (icm)
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Integrated Corridor Management (ICM). Brian P. Cronin, P.E. What is ICM?. ICM is a promising tool in the congestion management toolbox that combines advanced technologies and innovative practices. - PowerPoint PPT PresentationTRANSCRIPT
Integrated Corridor Management (ICM)
Brian P. Cronin, P.E.
What is ICM?
• ICM is a promising tool in the congestion management toolbox that combines advanced technologies and innovative practices.
• ICM is the proactive, joint, multimodal management of transportation infrastructure assets along a corridor by transportation system operators and managers.
• ICM seeks to optimize the use of existing infrastructure assets, making transportation investments go farther.
• With ICM, the corridor is managed as a system—rather than the more traditional approach of managing individual assets.
Example ICM Corridor
Local Jurisdiction 1 — Traffic Signal System
Regional Rail Agency — Train Management System
State DOT — Freeway Management System
Bus Company — AVL System
Local Jurisdiction 2 — Traffic Signal System
Integrated Corridor Management System
An ICMS is the set of procedures, processes, and information systems that
support transportation system managers in making coordinated decisions involving the
optimal performance of all transportation networks in a corridor.
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Corridor Networks Today
Arterial
Signal
Systems
Freeway
Systems
Bus
Systems
Rail
Systems
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Significant Congestion ICM Systems
Managing All Corridor Capacity
With ICM
ICMS Context
Operational Objectives – Provide the Tools To:– Optimize performance at a corridor level
• Improve utilization of existing infrastructure• Reduce travel delays
– Achieve load balancing across the networks• Facilitate mode shifts• Facilitate route shifts• Facilitate departure/arrival shifts
– Respond to events with coordinated multi-agency actions
“ICM is about management of a corridor. Management implies more than monitoring. Management
implies planning for, and responding to what is happening.”
ICM AMS Focus: Integrated Performance Measures
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Improved
Corridor Management
Short-term prediction
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Seattle
OaklandSan Diego
Montgomery County
DallasSan AntonioHouston
Minneapolis
Eight USDOT ICM Pioneer Sites 3 Stages for the Pioneer Sites:
• Stage 1 – Concept of Operations, Sample Data, and Requirements
• Stage 2 – Analysis, Modeling, and Simulation• Stage 3 – Demonstration and Evaluation
High-Level ICM Program Plan
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Phase 3: Stage 1 - ICM Pioneer Site Concept of
Operations and Requirements
Phase 3: Stage 2 -Analysis, Modeling &
Simulation of Selected
Pioneer Sites
Phase 3:Stage 3 - Pioneer
Demonstration Projects
September 2005 March 2008 July 2009
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Phase 1:Foundational Research
FY 04 FY 05 FY 06 FY 07 FY 08 FY 09 FY 11FY 10
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Phase 2: Corridor Tools, Strategies & Integration
Stakeholder Working Group
Phase 4: ICM Operations Concept Knowledge and Technology Transfer
Standards Completion and Deployment
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A Systems Engineering Approach
Concept of Operations Development
The Goals of a Concept of Operations
• Describe the system characteristics– Operational perspective
• Show how the users, user organizations, and the system will achieve mission goals
• Facilitate understanding of system goals• Form a basis for long-range operations planning• Provide guidance and information
– To develop subsequent requirements specifications– To develop interface specifications.
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The Generic ICMS
• Get information• Process information• Store information• Send information to
Operators, Agencies & Public
• Analyze situations• Recommend actions• Execute required
actions
Sample ICMS Concept
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Systems Requirements
Requirements Specification
• Developed after CONOPS is Complete
• Document Identifies – Functions– Quantity– Quality
• Document Organization– Introduction– System Description– Requirements
• Requirements are not System Design
What have we learned so far in CONOPS and Requirements development…
1. Involve the Right people from the Start
2. Develop a Clear Concept
3. Go slow to go fast
4. The need for Needs
5. A Picture = A Thousand Words
6. Technical gaps will exist
7. Word Choices is Important
8. Build the right thing and build it right
ICM Transit and Arterial Data Gap Overview
Data Needs Analysis
ICMS introduces needs that were not present when we were only dealing with one network at a time.– Data collection needs time stamps so data from different sources can be aligned– Data granularity is different for ICMS (we need finer spatial and temporal detail) – Data latencies that were acceptable for reporting will not work for operational
modeling and control
• Decisions about how to respond to current situations should not be based on data that is days or weeks old.
• Observational data needs to be collected often enough to represent the current situation.
• Observational data needs to be available quick enough to facilitate a useful response
– Challenges: Data sharing limitations: proprietary data, agency policies, incompatible data systems
ICM Data Requirements
• Transit Networks - We need data that represents the current situation– Vehicle location and speed every 30-120 seconds– Vehicle passenger count every pull-out
• Arterial Networks – We need data that represents what is happening at the lane level– Vehicle volumes, by approach lane, collected every 1-5 seconds
& reported every 30-300 seconds– Signal phase data, by approach lane, collected every 1-5
seconds & reported every 30-300 seconds– Link volumes and average speeds every 30-300 seconds
Data Types and Performance Measures
Associated Corridor Performance Measures– Travel time
– Travel delay time and predictability
– Incident duration and frequency
– Fuel consumption and pollution reduction
– Corridor capacity utilization (vehicle & traveler throughput)
Arterial Performance Measures– Vehicle speed– Link speeds– Intersection approach volumes– Ramp queues– Link and ramp capacity
Transit Performance Measures– Schedule adherence– Speed/travel time– Transit capacity utilization– Parking space utilization
Analysis, Modeling and Simulation (AMS)
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Multi-level Analysis Tools Provide Comprehensive Insight
Traffic control strategies such as ramp metering and arterial traffic signal control
Traveler information, HOT lanes, congestion pricing and regional diversion patterns
Regional patterns and mode shift; Transit analysis capability
Test Corridor Analysis Provides Preliminary Insights and Enabled Modeling of Discrete Strategies
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Macro-Level Meso-Level Micro-Level
San Diego, CA Dallas, TX Minneapolis, MN
• Major employers
• No ability to expand
• Surrounding construction planned
• Busy commuter corridor
• Limited expansion capacity
• Major construction planned
• Popular freight, tourist and commuter corridor
• Lengthening peak travel periods
• Integrated management
• Coordinated incident management
• Multi-agency data exchange
• Managed lanes
• Transit signal priority
• Signal timing
• Integrated management
• Coordinated incident management
• Dynamic ramp metering
• Reversible HOT lanes
• Increased transit ridership
• Congestion avoidance rewards
• Integrated management
• Coordinated incident management
• Integrated operational systems
• Increased park and ride capacity
• HOV
ICM Strategies
Three AMS Sites
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San Diego, California
Managed Lanes
Drop Ramps
Park-and-Ride
BRT Station
Direct Access Road to Arterial
Main Lanes
…With ICM
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2
3
4
5
61
2
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1
4
54
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San Diego’s Rancho Bernardo Transit Center before ICM…
ICM Knowledge and Technology Transfer (KTT)
ICM KTT Mission
Equip corridor managers and operators across the country
to implement and use ICM.
Searchable/Browseable: “ICM Knowledgebase”
• Resources Available Now in the ICM Knowledgebase:– Pioneer site CONOPs and
Requirements Documents
– AMS Resources and Findings
– Technical Integration/Data Gap Technical Resources
– Lessons-Learned from ICM Pioneer Sites
• KTT Resources Coming Soon:– Pioneer Site Webinars and peer
exchanges– New fact sheets – Resource guidance documents
Next Steps
• Present Analysis, Modeling and Simulation results from 3 Pioneer Sites
• Further investigate ICM data needs
• Select demonstration sites
• Conduct demonstration and evaluation
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Questions? Search “ICM, USDOT”
• Brian Cronin, RITA [email protected]
• Steve Mortensen, [email protected]
• Dale Thompson, FHWA [email protected]
• Bob Sheehan, [email protected]