The bus drivers in downtown Chicago are the opposite. They pull out regardless of whether bikes are in the lane next to them. a couple of days ago, there were 4 of us in the lane riding single file, and a bus pulls out into the middle of us. One rider was in front of it, two of us were able to stop, but one had to swerve into the next lane over (where there was moving traffic). Fortunately, the driver in the next lane was paying attention, and stopped to let the cyclist through.