Not sure why they call it common sense when it is not common at all and politicians that make laws seem to possess less of it than anyone. In most places it is illegal to ride a bicycle on the sidewalk. Why? Because pedestrians, even running, travel slower than bicycles and are subject to being hit. In the same way bicycles travel slower than vehicles which are much heavier. As mentioned before, anything traveling slower than the speed of traffic is a hazard whether it is a tractor, an Amish buggy, an ATV, a cow or a horse. That creates a hazard. Now they want to limit semis to 65 mph when the speed limit is 75 mph. Sometimes you need to take responsibility for your own safety because the politicians creating these laws are only interested in who will donate to their re-election campaign.