6 levels of vehicle autonomy

level 0:
- no driving automation, completely manual
level 1:
- driver assistance:
  - cruise control
  - adaptive cruise control (keeps car a distance behind the car in front)
level 2:
- partial driving automation:
  - advanced driver assistance systems (ADAS):
    - vehicle controls both steering and speed
    - human can take control at any time
    - Tesla Autopilot is level 2
level 3:
- conditional driving automation:
  - “environmental detection” capabilities
  - still requires humans to override – driver must be paying attention
level 4:
- mostly do not need human interaction
- cars can generally deal with adverse circumstances
- use is limited by regulation
- Waymo is considered level 4 (as of 2020)
level 5:
- full driving automation
- no human attention needed
- level 5 cars won’t have any human driving controls (steering wheels or pedals)