[shiroiuma]

Presumably, Idaho does have the "Idaho stop", so driverless cars should be designed with that in mind, and operate as conservatively as possible to avoid crashes caused by other drivers or cyclists not perfectly obeying the rules.

[undersuit]

Like how California leads the country on emission standards, you'd think the cars following the elevated CA emission standards across the country would also follow the Idaho standard too. Ignoring it is perilous... if a driver incorporates the Idaho Stop into their driving they will not be confused by bicyclists using the Idaho Stop. They might even be more prepared for other things like people running on the side of the road.

Drivers(Idaho included) by and far embrace the California Stop colloquialism if you ask me. The majority of traffic on roads is cars and the majority of traffic rolls through stop signs.