Tenn. Code Ann. § 65-12-109

A violation of § 65-12-108 by any railroad company constitutes negligence per se and in the trial of any causes involving § 65-12-108, the burden of proof, the issue of proximate cause, and the issue of contributory negligence shall be tried and be applied in the same manner and with the same effect as in the trial of other negligence actions under the common law in Tennessee.