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8 TABLE 1 AGENCIES PARTICIPATING IN SURVEY Agency System U.S. Deployments City of Longview, TX ACS Lite W.E. Stilson Consulting Group, LLC, Columbus, OH ACS Lite City of Little Rock, AR InSync California Department of Transportation -- District 7, CA LA ATCS Culver City, CA LA ATCS Los Angeles Department of Transportation, CA LA ATCS City of Chesapeake, VA OPAC Town of Cary, NC OPAC Virginia Department of Transportation, VA OPAC Pinellas County, FL OPAC, RHODES City of Tucson, AZ RHODES Washington State DOT, WA RHODES City of Chula Vista, CA SCATS City of Gresham, OR SCATS City of Menlo Park, CA SCATS City of Santa Rosa, CA SCATS City of Sunnyvale, CA SCATS Cobb County, GA SCATS Delaware Department of Transportation, DE SCATS Florida DOT District 4, FL SCATS Minnesota Department of Transportation, MN SCATS Pasco County, FL SCATS Road Commission for Oakland County, MI SCATS Utah Department of Transportation, UT SCATS City of Anaheim, CA SCOOT City of Ann Arbor, MI SCOOT Collier County, FL SCOOT Orange County, FL SCOOT Reedy Creek Improvement District, FL SCOOT Short Elliott Hendrickson Inc., MN SCOOT International Deployments Econolite Canada Inc., Canada RHODES Dublin City Council, Ireland SCATS New Zealand Transport Agency, Auckland, NZ SCATS RTA, New South Wales, Sydney, Australia SCATS UOCT, Concepcion, Chile SCATS VicRoads, Victoria, Australia SCATS City of Blackpool Council, UK SCOOT City of Red Deer, Canada SCOOT City of Southampton, UK SCOOT City of Toronto, Canada SCOOT Derby City Council, UK SCOOTS Greater Manchester Urban Traffic Control Unit, SCOOTS Halifax Regional Municipality, Canada SCOOTS Hampshire County Council, UK SCOOTS I Mo TS Siemans Ltd., Beijing, China SCOOTS after they left their respective agencies. Also, in few instances, ANALYSIS APPROACH individuals from agencies that do not currently run ATCSs were interviewed. Some of these agencies went through an The analysis approach had two major components. First, when- ATCS procurement process but decided not to install a system. ever ATCS users responded to a multiple-choice question, Other agencies had only probationary deployments of their results were reported in the text without (or with minimal) ATCSs, which were removed after the trial periods. Finally, further manipulation. For the questions considered to be very some agencies that shut down their ATCSs were also inter- important, the descriptions of the results were accompanied by viewed. Overall, the response rate from North American ATCS corresponding charts or tables. In the event of open-ended users was slightly more than 80%. questions, answers were categorized before being presented.