There's the beginnings of a standard for L2/L3 vehicles in Europe, and ongoing discussions about what L4 standards could look like, but neither addresses "adversarial" situations.
The trouble with "driver assistance" systems is the handoff to the driver. That's not reliable. Results from the aviation community indicate that it takes about ten seconds after an autopilot disconnect before the pilot has stable control of the aircraft. "L3.5" accepts that. The < 2 second response required by some L2 systems does not.
I passed because I didn’t kill anyone in the span of eight blocks.