The implementation of an Integrated Corridor Management (ICM) concept is a key Transportation System Management Program
strategy that focuses on maintaining the greatest mobility benefits through the application of innovative technologies
that maximize network efficiencies across modes. Such efficiencies can result in decreases in both fuel consumption and
transportation related emissions.
On April 21, 2016, the final piece of a system designed to guide motorists around major incidents along the Interstate
15 corridor was activated, providing travel choices and improving travel-time reliability. The system includes electronic
freeway signs, alternate route signs, and coordinated traffic signal and ramp meters.
Since 2010, SANDAG has been working with its local partners (Caltrans, the Metropolitan Transit System, and the cities
of San Diego, Poway, and Escondido) to demonstrate the benefits of this concept along the Interstate-15 (I-15) corridor.
The I-15 ICM project focuses on maximizing the operations and management of the I-15 corridor with ramp meters, arterial
signals, and the Rapid transit system. The ICM concept enables multiple systems to “talk” to each other to coordinate
operations and maximize efficiency regardless of who owns or operates the individual system; monitors changing conditions
and congestion based on real-time information; generates automated response plans; and re-evaluates and generates new
response plans as traffic conditions change. An ICM concept includes the following key features:
The update to San Diego Forward: The Regional Plan, which would be adopted in 2019, anticipates the completion of the
next ICM Concept of Operations Reports that would identify and expand on the ICM concept for up to three new corridors,
in addition to existing Interstate 15. Concept of operations reports are an important first step in establishing the
institutional and technical partnerships that will be required for successfully working together to achieve a common
and unified vision for managing all modes as a single corridor regardless of jurisdictional/institutional boundaries.
SANDAG, 401 B Street, Suite 800, San Diego, CA 92101
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