All the fines in the world won’t save you from getting mowed down by a distracted driver on their phone. Drinking and driving has heavy fine deterrents, yet people still do it anyway. You know what stops a drunk or distracted driver from killing someone? A cement barrier
> a distracted driver on their phone
Waymos don’t get distracted. Grade separation, ticketing and increasingly favoring AVs in cities is a simpler solution than erecting physical barriers, which have the downside of making cities less walkable.
add to that, a class of drivers that believe two wheel vehicles have no place on public thoroughfares, openly hostile to non cars.