Section 68-121-109 - Maintenance in safe operating condition(a) Every elevator, dumbwaiter and escalator shall be maintained by the owner or lessee in a safe operating condition and so that it conforms to the rules and requirements of the board as adopted under § 68-121-103.(b) Every aerial passenger tramway shall be maintained by the owner or lessee in a safe operating condition and so that it conforms to the rules and requirements of the board as adopted under §§ 68-121-101, 68-121-103, 68-121-108, and this section.(c)(1) As provided in the applicable codes of the American Society of Mechanical Engineers (ASME) as adopted by the Tennessee elevator safety board, each elevator shall have a means of two-way communication. The code requirement of two-way communication may be satisfied with a dedicated line, a line consolidation technology that enables the simultaneous operation of more than one (1) communication device, or an intercom system where a central answering location is staffed twenty-four (24) hours a day.(2) If the state chooses to upgrade its two-way communication system in elevators in state facilities, funds in the facilities revolving fund may be used for such upgrade.Acts 1951, ch. 235, § 7 (Williams, § 5379.15); 1974, ch. 418, § 4; T.C.A. (orig. ed.), §§ 53-2609, 68-19-109; Acts 2005, ch. 436, § 3.