Retirement/Replacement ITS Systems Engineering process: operation of the ITS is periodically assessed to determine its efficiency http://www.itslessons.its.dot.gov/its/benecost.nsf/DisplayLessonSystemsEng?OpenForm&Retirement/Replacement ITS Lessons >> Use Analysis, Modeling, and Simulation (AMS) to identify gaps, determine constraints, and invest in the best combination of Integrated Corridor Management (ICM) strategies.12/11/2009 12:20:18 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/Lesson?OpenForm&43CAB9C9CAF3435B8525767800548502^HomeITS Lessons >> Adopt a performance-based, proactive approach to traffic signal system operations in order to maximize operational efficiency.01/04/2008 02:13:58 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/Lesson?OpenForm&20EB0E41225611D7852573A60063EEEA^Home