Self-driving cars: A level-by-level explainer of autonomous vehicles
Level 3: Conditional automation
The jump in complexity between Levels 2 and 3 is huge compared to the jump between 1 and 2. A Level 3 vehicle is capable of taking full control and operating during select parts of a journey when certain operating conditions are met.
For example, a vehicle that is capable of managing itself on a freeway journey, excluding on- and off-ramps and city driving, might be considered Level 3 automated. This level of automation requires advanced sensor packages, hardware backups and sophisticated software to keep occupants safe.
The driver must remain vigilant, even when the vehicle is self-driving, in the event of a failure. Even with Level 3, a driver monitor system is all but a prerequisite to ensure that the person in the driver's seat is sufficiently alert to take over when conditions dictate.