House committee substitute makes the following changes to the 1st edition.

Amends GS 20-4.01 to amend the definition of operator to no longer include causing a fully autonomous vehicle to "travel" with the automated driving system.

Amends proposed GS 20-399 to amend the definition of fully autonomous vehicle and to define semi-autonomous vehicle (vehicles with autonomous components that either require or permit a human to perform part or all of the dynamic driving task at any time).

Amends proposed GS 20-400 (Regulation of fully autonomous vehicle). Authorizes local governments to enact local laws or ordinances regulating motor vehicles with automated driving systems to the extent vehicle regulation is specifically authorized in GS Chapters 153A and 160A, but maintains prohibitions on any other kind of regulation of motor vehicles with automated driving systems.

Replaces new GS 20-401, now providing that this subchapter (probably intends new GS Chapter 20, Article 17) does not affect, alter, or amend the ability to operate a vehicle with an automated driving system that is not a fully autonomous vehicle.