Every person propelling any pushcart or similar vehicle upon a street or highway within the City shall be subject to the provisions of this Part
2 applicable to the driver of any vehicle, except those provisions of this Part
2 which by their very nature can have no application.
No person upon roller skates or riding in or
by means of any coaster, toy vehicles, skateboards or similar devices
shall go upon any roadway except while crossing a street on a crosswalk,
and when so crossing a street on a crosswalk, such person shall be
granted all of the rights and shall be subject to all of the duties
applicable to pedestrians.