I guess my point is that in some states the unique situation of the bicycle is taken into account. It is not a car. It is allowed on roads but it is expected to defer to 45mph motor traffic. It is allowed on sidewalks but it is expected to defer to pedestrians. In NYC a bicycle is a 'motor vehicle'. You cannot ride 10' on a sidewalk, even if there is no bike lane nearby. In the 80's and early 90's you could ride in the door zone pretty easily. Now, cars (SUV's) are so wide there is no door zone. You ride in the passenger side mirror zone at your peril. Some nuance is needed in the Vehicle Code of many U.S. cities.