Based on the description in that article, it doesn’t seem that the Tesla autonomously reacted to the stop sign, so much as it slowed to a stop before making a right turn based on its navigation system. The driver says he had to manually start AutoPilot after the stop for it to initiate the right turn:
> “The car always stops at the end of a highway exit since Navigate on Autopilot. At the stop, you just need to touch the accelerator to start Autopilot again without Navigate on Autopilot. I didn’t accelerate, you just need to touch the accelerator for less than a second and the car will do the rest at the intersection.”
Perhaps you should confirm what it's actually doing in the video? Tesla itself says that stop sign and traffic light handling is in shadow mode only [1].
> “The car always stops at the end of a highway exit since Navigate on Autopilot. At the stop, you just need to touch the accelerator to start Autopilot again without Navigate on Autopilot. I didn’t accelerate, you just need to touch the accelerator for less than a second and the car will do the rest at the intersection.”