SAE Automation Levels

A six-level classification system (0-5) defined by SAE International that describes the degree of vehicle automation. Level 0 provides no automation; Levels 1-2 offer driver assistance features; Level 3 provides conditional automation where the vehicle can drive but a human must be ready to take over; Levels 4-5 represent high and full automation where no human driving is required. For accessibility, the distinction matters because only Levels 4-5 enable truly independent transportation for people who cannot drive due to disability.