Ok and that makes sense when there is noone in the left lane. But when you have two or three cars traveling alongside a trailer and the ass moves over into the left lane pushing those cars onto the shoulder, ive even seen cars go on the grass because of this, just to give some guy room to change a tire. There is no logic there. Endanger the welfare of three to help one. Give me a fucking break. And I dont care how hard you think they work, nothing justifies purposely blcoking traffic without cause.