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Definition: autonomous vehicle levels


Following are the five stages of automation for vehicles. Each level includes all the functions of the previous levels.

Level 1 - Anti-lock brakes (see ABS).

Level 2 - Warnings for open doors and unbuckled seat belts. See TPM.

Level 3 - In 2019, most new cars have these features, which you can look up individually. See navigation system, adaptive cruise control, collision avoidance system, lane departure system, blind spot monitoring and adaptive headlights.

Level 4 - User-initiated self-driving; for example, Tesla's Autopilot. A few cars are at this stage in 2019.

Level 5 - No steering wheel. See self-driving car.