Self-driving cars: A level-by-level explainer of the road to autonomy

Self-driving cars have started to wear out their welcome, and they aren’t even here yet. Much of the promise and disappointment around them centers on Level 4, one of six levels of technology that allow cars to operate without our input to some degree.

https://www.cnet.com/roadshow/news/self-driving-car-levels-explainer-autonomy-sae/