The white truck should have been pulled over to the side of the road like the red truck, instead of continuing, shouldn’t it?
I’ve always counted cars behind me, as that’s the only way to keep track of who’s where. Red saw the lights coming up behind him, but in the left lane. He still rolled over onto the shoulder, then saw they were in the outside, so he rolled back into his lane not realizing that White had barreled up onto him.