(A) The Board of Trustees with respect to highways under its jurisdiction may designate any highway, roadway, part of a roadway or specific lanes upon which vehicular traffic shall proceed in one direction at all times or at such times as shall be indicated by traffic-control devices.
(B) Except for emergency vehicles, no vehicle shall be operated, backed, pushed or otherwise caused to move in a direction which is opposite to the direction designated by competent authority on any deceleration lane, acceleration lane, access ramp, shoulder or roadway.
(C) A vehicle which passes around a roundabout shall be driven only to the right of the central island while on the circulatory roadway in such a roundabout.
(Neb. RS 60-6,138)