>This intersection is 4 lanes plus a left turn lane in all directions with constant traffic. Hand signals were absolutely necessary because 12 people were all a

>This intersection is 4 lanes plus a left turn lane in all directions with constant traffic. Hand signals were absolutely necessary because 12 people were all approaching the intersection simultaneously. There is a set of rules that describes which cars go in what order. The big problem I see is human drivers are going to start driving more aggressively because they know automated vehicles will always back off first.