Tennessee Code Title 65. Public Utilities and Carriers § 65-12-104

(a) Every engine or train shall be brought to a full stop before crossing a railroad which intersects at grade the road upon which it runs.

(b) When the intersecting roads are under the management of the same company, this section shall not apply to engines and trains run upon the longer road.

(c) A violation of this section is a Class C misdemeanor.

(d) This section shall not apply where such other railroad is disconnected by interlocking switches placed on both roads, and at a safe distance from, and on each side of, the railroad crossing, such interlocking switches to be according to the present state of the art, and kept in good order and repair.