Where I come from that might be called a "shower". Heavy rain here is like fog. It's so thick you can only see a few meters, and the windscreen wipers can onl

Where I come from that might be called a "shower". Heavy rain here is like fog. It's so thick you can only see a few meters, and the windscreen wipers can only give you a brief glimpse of what's ahead. It happens rarely. When it does, more cautious drivers give up and pull over, even if they are on the freeway. That makes travelling at high speed down on freeway at high speed in those conditions near suicidal. It only lasts a few minutes. I expect Waymo would handle like any human. Stop, or just creep forward.