In the context of traffic control, modern techniques involve the presence of autonomous vehicles (AVs) implementing control strategies with the objective of stabilizing traffic flow and avoiding congestion. This approach has proven to be effective through experiments where a small number of AVs is inserted within a group of human-driven vehicles travelling on a ring road. With the objective of unveiling the key factors underlying experiments, we select a mathematical description of traffic flow and study its properties. In this work, the well-known Optimal Velocity model, or Bando model, is adopted to model the behaviour of a group of N vehicles driving on a closed ring road without being fed by any external input signal.