How exactly will driverless cars work, the edge cases are infinite. They would have to be limited to certain routes, conditions, and cities.

With the acceptance that they can't handle every edge case.

Which might be reasonable, anyway - how many humans can handle every edge case?

The drivers who can't handle the edge cases face the justice system. If You or I did that we'd face repercussions.

Tl;dr Cops are self important and like to yell, and pout when they find they are yelling at nobody.