Tenn. Code Ann. § 55-8-122: One-way roads and rotary traffic islands

(a) The department of transportation may designate any highway or any separate roadway under its jurisdiction 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 the island.