Distraction today is one of the main factors that put drivers at risk but, at the same time, it is one of the least known and contrasted aspects because it is difficult to measure. In Italy, over four road accidents out of ten are due to distraction behind the wheel; among these the use of the mobile phone leads to the guide which is the main cause of accidents in over 40% of cases. Statistics also show that over 50% of drivers use their mobile phones while driving, not only to make and answer calls, but even to send messages or e-mails. Many, however, are unaware that using an electronic device lowers the attention threshold making it similar to that of the driver with a blood-alcohol level of 0.8 g / liter (the limit is 0.5) and that the reaction times