Title 40, Chapter 6, Section 47
(a) The Department of Transportation and local authorities with
respect to highways under their respective jurisdictions may
designate any highway, roadway, part of a roadway, or specific lanes
upon which vehicular traffic shall proceed in one direction at all
of such times as shall be indicated by official traffic-control
(b) Upon a roadway so designated for one-way traffic, a vehicle
shall be driven only in the direction designated at all or such
times as shall be indicated by official traffic-control devices.
(c) A vehicle passing around a rotary traffic island shall be driven
only to the right of such island.