<i>The extra width is for parking.</i><p>Thanks for that.  It&#x27;s so obvious from that view, but harder to understand from the bird&#x27;s eye view.<p>So from the bus driver&#x27;s perspective, the AV was a parked car on the side of the road.  From the AV&#x27;s perspective, it likely should have treated the situation as if it was going from a parked position to merging into traffic.