Automated Driving Definitions
Driving involves paying attention to the vehicle, the road, and the environment so that you can steer, brake, and accelerate as needed. If you're expected to pay attention, you're still driving -- even when a vehicle feature is assisting you with steering, braking, and/or accelerating. (Driving may have a different legal meaning.)
Types of trips
A. You must drive for the entire trip B. You will need to drive if prompted in order to maintain safety C. You may want to drive if prompted in order to reach your destination D. You will not need to drive for any reason
Types of vehicles
A. Vehicles you can drive B. Vehicles you can't drive
Types of vehicle features
These are the levels of driving automation. They describe features in vehicles rather than the vehicles themselves. The feature or features in a vehicle may not always be engaged or even available. The operational design domain (ODD) describes when and where a feature is specifically designed to function. For example, one feature may be be designed for freeway traffic jams, while another may be designed for specific roads in a specific city in good weather.
Assisted driving features
L0: You're driving
L1: You're driving, but you're assisted with either steering or speed
L2: You're driving, but you're assisted with both steering and speed
B. Automated driving features
L3: You're not driving, but you will need to drive if prompted in order to maintain safety
L4: You're not driving, but either
a) you may need to drive if prompted in order to reach your destination (for a vehicle you can drive) or
b) you will not be able to reach every destination (for a vehicle that you can't drive)
L5: You're not driving, and you can reach any destination