2021 Tennessee Code
Part 2 - Required Equipment on Vehicles
§ 55-9-201. Horn — Bells, Sirens or Exhaust Whistles on Emergency Vehicles — Penalty for Violations

not less than  nor more than
83,300 83,400
85,725 85,825
143,900 144,000
250,000 300,000
400,000 —
according to the 1980 federal census or any subsequent federal census.