**2.5 Classification issues**

The schemes that is internationally used as standard for the classification of "Automated Vehicles" is the "SAE Levels" [8], written by "SAE INTERNATIONAL" (U.S.-based, globally active professional association and standards developing organization for engineering professionals in various industries) (**Figure 1**).

As shown in **Figure 1**, a six levels taxonomy proposed; these six levels are collected in a meta-classification based on two macro categories (Human Driver e Automated Driving System) that identify the technology inside the vehicle and the type of driver.
