I-80 Integrated Corridor Mobility (ICM) Project: The First Full Scale Deployment of Active Traffic Management (ATM) System in the United States

This paper describes the Interstate-80 Integrated Corridor Mobility (ICM) Project, which focuses on traffic congestion in San Francisco, California in a corridor from the Bay Bridge to the Carquinez Bridge. This corridor has ranked as the most congested corridor in the entire San Francisco Bay Area during the last six years, with traffic volumes reaching 312,000 vehicles per day, with an average of 20,000 hours of delay daily. Currently, the demand on the freeway far exceeds the roadway capacity, causing unreliable travel times, erratic operating speeds, breakdowns, as well as diversion to the local arterials. The combined effect of the traffic incidents and the congestion hinders efficient incident response times and creates additional secondary incidents. The primary goal of the I-80 ICM Project is to enhance the current Transportation Management System and to build a balanced, responsive, and equitable integrated system that will monitor and maintain optimum traffic flow, through speed harmonization, along the network. This system can improve the safety and mobility for all users, including transit customers. The authors note that I-80 ICM is the first full scale implementation of Active Traffic Management (ATM) in the United States for a very highly congested corridor. The authors describe each of the proposed project elements including: Freeway Management System (FMS); corridor-wide adaptive ramp metering including HOV bypass lanes for transit access; speed harmonization through advisory variable speed signs; an arterial management system; a transit management system; a traveler information system (TIS); commercial vehicle operations; traffic surveillance and control system; and an incident management system. The I-80 ICM project consists of multiple systems and strategies, working collectively, to address the challenges of the imbalanced flow of traffic in the corridor. The construction phase of the project will commence by 2010 and is expected to be operational by 2012.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Maps; Photos; Tables;
  • Pagination: 12p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01142545
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 24 2009 6:59AM