Tennessee Code Title 54. Highways, Bridges and Ferries § 54-5-1104

(a) This section only applies to businesses that have participated in the specific service sign program for ten (10) years or more.

(b) Where more than six (6) businesses of a specific service type are eligible for sign panels at the same interchange or intersection approach, the department may display additional sign panels of that same specific service type in accordance with Section 2J.04 and other applicable guidelines in the Manual on Uniform Traffic Control Devices. The additional sign panels may be displayed by placing more than one (1) specific service type on the same sign.

(c) If the department places more than one (1) specific service type on the same sign pursuant to subsection (b), then the department shall not display more than three (3) types of services on the sign. If three (3) types of services are displayed on a single sign, then the sign panels must be limited to two (2) for each service type. If the department displays two (2) types of services on a single sign, then the sign panels must be limited to either three (3) for each service type, or four (4) for one (1) service type and two (2) for the other service type.