(a) Where sidewalks are provided, it shall be unlawful for any
pedestrian to walk along and upon an adjacent roadway.
(b) Where sidewalks are not provided, any pedestrian walking along and
upon a highway shall, when practicable, walk only on the left side of
the roadway or its shoulder facing traffic which may approach from the
opposite direction and shall yield to approaching vehicles.
(c) It shall be unlawful for any person to enter upon any portion of a
bridge for the purpose of diving or jumping therefrom into a lake,
river or stream for recreation, and it shall be unlawful for a
pedestrian to use a bridge where sidewalks are not provided for the
purpose of standing or sightseeing.