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Integrated Corridor Management Analysis, Modeling, and Simulation

Integrated Corridor Management Analysis, Modeling, and Simulation

With ICM, the various partner agencies manage the transportation corridor as a system
rather than the traditional approach of managing individual assets.
With ICM, the various partner agencies manage the transportation corridor as a system rather than the traditional approach of managing individual assets.

The U.S. Department of Transportation (USDOT) launched the 5-year, multimodal Integrated Corridor Management (ICM) initiative in 2005 to help mitigate bottlenecks, manage congestion, and empower travelers to make more informed travel choices through actionable information. In 2006, the USDOT selected 8 Pioneer Sites to partner with and define their concepts of operations and requirements for the ICM initiative. The Pioneer Sites include Oakland and San Diego, CA; Dallas, Houston and San Antonio, TX; Montgomery County, MD; Seattle, WA; and Minneapolis, MN.

Transportation corridor operators and managers can employ an array of ICM strategies to improve the movement of people and goods. With so many choices, agencies are interested in analyzing the potential benefits of the various approaches to help them decide on specific ICM strategies to implement. The USDOT developed the ICM analysis, modeling, and simulation (AMS) methodology, which combines elements of existing models to support comprehensive assessment of ICM strategies not available today through any single tool. The AMS approach enables corridor managers to:

  • Select and apply the most effective ICM strategies,
  • Invest with confidence, and
  • Continually improve implementation of ICM strategies.

In order to validate the AMS approach, Interstate 880 (I-880) in the San Francisco Bay Area was selected to serve as a test corridor. Using historical data, analysts examined the potential implications of specific sample ICM strategies under a variety of conditions along the corridor. Preliminary results from AMS of the test corridor suggest:

  • ICM will help reduce congestion and improve productivity of the nation's transportation corridors.
  • Benefits of ICM strategies appear to be greatest under conditions of traffic congestion due to heavy demand and/or incidents.
  • Dynamically applying ICM strategies in combination across a corridor reduced congestion and improved the overall productivity of the transportation system.
The USDOT has selected Pioneer Sites to apply analysis, modeling, and simulation (AMS) methodology on those sites' proposed integrated corridor management systems. Highway, arterial, and transit data are being analyzed to support AMS efforts.
The USDOT has selected Pioneer Sites to apply analysis, modeling, and simulation (AMS) methodology on those sites' proposed integrated corridor management systems. Highway, arterial, and transit data are being analyzed to support AMS efforts.

In late 2008, the USDOT selected three of the eight ICM Pioneer Sites to conduct AMS on their proposed integrated corridor management systems. The selected sites-Dallas, Texas; Minneapolis, Minnesota; and San Diego, California-have the data, modeling and simulation tools and well-described ICMS needed to support analysis and are in the process of developing experimental plans. They are currently developing AMS experimental plans and evaluating the highway, arterial and transit data available to support AMS and ICM decision support systems. The analysis should be completed by the summer of 2009.

For more information on AMS or the USDOT ICM Initiative, please visit: http://www.its.dot.gov/icms/index.htm.