A systematic evaluation of the performance and effectiveness of a Field Operational Test (FOT) of an integrated corridor-level adaptive control system was attempted from fall 1994 through spring 1999 in the City of Irvine, California. The FOT was conducted by a consortium consisting of the California Department of Transportation (Caltrans), the city of Irvine, and two private sector consultants, National Engineering Technologies (NET) , and Farradyne Systems, Inc., a division of Parsons Brinkerhoff (PB/FSI), with the City of Irvine as the lead agency. The FOT was a cost-share funded by the FHA as a part of the INtelligent Vehicle Highway Systems FOT Program. The FOT involves an integrated Advan ed Transportation Management System (ATMS) which extends the capabilities of existing traffic management systems in the City of Irvine and in Caltrans District 12. The evaluation originally entailed both a technical performance assessment and a comprehensive institutional analysis.