Title 40, Chapter 6, Section 14
(a) It is unlawful for any person operating or occupying a motor
vehicle on a street or highway to operate or amplify the sound
produced by a radio, tape player, or other mechanical sound-making
device or instrument from within the motor vehicle so that the sound
is plainly audible at a distance of 100 feet or more from the motor
(b) The provisions of this Code section shall not apply to any law
enforcement motor vehicle equipped with any communication device
necessary in the performance of law enforcement duties or to any
emergency vehicle equipped with any communication device necessary
in the performance of any emergency procedures.
(c) The provisions of this Code section do not apply to motor
vehicles used for business or political purposes, which in the
normal course of conducting such business use sound-making devices.
The provisions of this subsection shall not be deemed to prevent
local authorities, with respect to streets and highways under their
jurisdiction and within the reasonable exercise of the police power,
from regulating the time and manner in which such business may be
(d) The provisions of this Code section do not apply to the noise made by a horn or other warning device required or permitted by Code Section 40-8-70. The Department of Public Safety shall promulgate rules defining "plainly audible" and establish standards regarding the measurement of sound by law enforcement personnel.
(e) A violation of this Code section shall be a misdemeanor.