  This paper presents the state of the art of Adaptive Cruise Control (ACC) and
Stop and Go systems as well as Intelligent Transportation Systems enhanced with
inter vehicle communication. The sensors used in these systems and the level of
their current technology are introduced. Simulators related to ACC and Stop and
Go (S&G) systems are also surveyed and the MEKAR simulator is presented.
Finally, future trends of ACC and Stop and Go systems and their advantages are
emphasized.
