Did you know that one of the lanes pictured above is a NOT a mandatory use bike lane for us in Maryland? This article from AZ covers many of the issues that we face here in Maryland over the confusion with extra width that is not defined.
There seems to be a rash of confusion amongst the general public -- both motorists and cyclists -- about what constitutes a bike lane. Adding to the confusion, is the term Bike Route, and compounding all of that is penchant by all most all Maryland DOTs to paint a solid white stripe enclosing whatever space is left over between the right hand travel lane and the gutter. http://azbikelaw.org/articles/RayRoad.html