Level 4 autonomy description?

• A. The vehicle can perform all driving tasks autonomously, with the driver still able to perform some tasks.
• B. The vehicle requires a driver to be present at all times and supervise.
• C. The vehicle cannot operate without a driver.
• D. The vehicle operates only in testing facilities.

Answer: (A)

Level 4 autonomy means the vehicle can handle all driving tasks on its own within a defined operating domain, without needing a human to supervise the driving. The description that the vehicle can perform all driving tasks autonomously, with the driver still able to perform some tasks, captures this idea: the system is capable of driving by itself in its designated conditions, while a person may still use the vehicle for other activities or take control if they choose, but driver attention isn’t required for the driving task itself.

This differs from options that imply a driver must be present at all times or that the vehicle cannot operate without a driver, which align with lower levels of automation, and from the idea that it only operates in testing facilities, which is too restrictive and not inherent to Level 4.