The Congressional committee in charge of auto regulation is considering 14 separate bills right now to spur AV innovation balanced against public safety.  That number of bills is not unusual in itself, but it highlights a couple things:

1) How quickly and thoroughly AV technology will impact American life.  Daily commutes, road trips, transport, road design, sign design, workforce mobility, and so on.

2) That a key problem may be human drivers learning how to interact with AI on the road.

3) How the entire mentality of safety regs will likely shift away from design considerations. The federal government has been critical in pushing automakers towards safer designs for drivers and pedestrians, typically through industry-wide adoption of more expensive features - impact standards, the third tail light, uniform bumpers, removing hood ornaments, etc.  But with the automobiles that will eventually eliminate human error, regulatory guidance that anticipates the inevitable collision will be anachronistic.  The result is that "highway safety" may become less about physical well being and more about the social impact of disruptive transport technology.