(a) Every person operating a wheelchair upon a sidewalk or roadway shall be granted all the rights and shall be subject to all the duties applicable to a pedestrian.
(b) Every person riding a motorized wheelchair on a bicycle lane, trail or path shall be granted all the rights and shall be subject to all the duties applicable to the driver of a bicycle operating on a bicycle lane trail or path except: (1) when those rights or duties, by their very nature, can have no application; or (2) as otherwise specifically provided under chapters 1 — 27 of this title.