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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.

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Presentation Transcript
what is icm
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
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

icm system
ICM System



Arterial Signal






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.

icms context
ICMS Context

“ICM is about management of a corridor. Management implies more than monitoring. Management implies planning for, and responding to what is happening.”

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
high level icm program plan
High-Level ICM Program Plan

FY 04

FY 05

FY 06

FY 07

FY 08

FY 09

FY 10

FY 11

Stakeholder Working Group

Phase 1:Foundational Research

Phase 2: Corridor Tools, Strategies & Integration

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

Site Applications Feasibility

Site Development Feasibility

Development Feasibility

Phase 4: ICM Operations Concept Knowledge and Technology Transfer

Standards Completion and Deployment

September 2005

March 2008

July 2009

eight usdot icm pioneer sites
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



Montgomery County


San Diego


San Antonio


icm ams focus integrated performance measures
ICM AMS Focus: Integrated Performance Measures

Improved Corridor Management

Short-term prediction

data needs analysis
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
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
corridor performance measures
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)
multi level analysis tools provide comprehensive insight
Multi-level Analysis Tools Provide Comprehensive Insight

Traffic control strategies such as ramp metering and arterial traffic signal control

Regional patterns and mode shift; Transit analysis capability

Traveler information, HOT lanes, congestion pricing and regional diversion patterns



test corridor analysis provides preliminary insights and enabled modeling of discrete strategies
Test Corridor Analysis Provides Preliminary Insights and Enabled Modeling of Discrete Strategies





test corridor analysis provides preliminary insights and enabled modeling of discrete strategies17
Test Corridor Analysis Provides Preliminary Insights and Enabled Modeling of Discrete Strategies


Three AMS Sites

San Diego, CA

Dallas, TX

Minneapolis, MN

  • Busy commuter corridor
  • Limited expansion capacity
  • Major construction planned
  • Major employers
  • No ability to expand
  • Surrounding construction planned
  • Popular freight, tourist and commuter corridor
  • Lengthening peak travel periods

ICM Strategies

  • Integrated management
  • Coordinated incident management
  • Integrated operational systems
  • Increased park and ride capacity
  • HOV
  • 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
san diego california
San Diego, California

San Diego’s Rancho Bernardo Transit Center before ICM…

…With ICM


Main Lanes


Managed Lanes



Drop Ramps










BRT Station

Direct Access Road to Arterial





icm ktt mission
ICM KTT Mission

Equip corridor managers and operators across the country to implement and use ICM.

searchable browseable icm knowledgebase
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
Next Steps
  • Complete Analysis, Modeling and Simulation results from Three Pioneer Sites
  • Select demonstration sites – October
  • Conduct demonstration and evaluation
    • Operational in 18 months
    • Evaluation for 18 months