Learn in the textbookIoT in Automobiles and Mobility
DefinitionAutonomous driving levels (自動運転レベル) are a classification that uses numbered stages to show how much of the driving the system (システム) handles.
ExplanationIn one widely used scheme, for example, Level 0 means no automation, and the higher the number, the more the system handles, until at the top, Level 5, the system drives anywhere under any conditions. The conditions here are the rules for when the system may drive, such as the type of road, the weather and the speed range.
AnalogyIt is like driving school: first the instructor drives to show you, then you take the wheel while the instructor watches beside you, and finally you drive alone, with more handed over at each stage.