A basic etiquette rule is Wheels Yield to Heels!!だそうです。ここに載ってないけど、途中Groundhogと出くわしてBが大変なことに(^^;;;
07/30/2020
Yield
Yield means let other road users go first. A yield sign assigns the right-of-way to traffic in certain intersections. If you see a yield sign ahead, be prepared to let other drivers crossing your road take the right-of-way. And don't forget about bicycles and pedestrians!