(a) The State Highway Commission or local authorities, within their
respective jurisdictions, may designate any street or highway or any
separate roadway under their respective jurisdictions for one-way
traffic and shall erect appropriate signs giving notice thereof.
(b) Upon a roadway designated and signposted for one-way traffic a
vehicle shall be driven only in the direction designated.
(c) A vehicle passing around a rotary traffic island shall be driven
only to the right of such islands.