Aurora, CO Noise Ordinances: Vehicle Noise (2026)

Using, operating, or permitting the use or operation of any radio receiving set, loudspeaker, musical instrument, television, phonograph, tape player, or other machine or device for the production or reproduction of sound in such a manner as to violate the maximum permissible sound levels in Table 4.11-1, is prohibited.

c. Using or operating any loudspeaker, public address system, or similar device between the hours of 10:00 p.m. and 7:00 a.m., in a manner that creates a noise disturbance to a residential real property boundary is prohibited, unless the activity is authorized by a temporary permit.

d. Idling or permitting the idling of a motor or any stationary diesel fuel burning vehicle or motor vehicle of any kind for a period in excess of 15 minutes in any hour, within the City limits at any time is prohibited. This Section shall not apply to:

i. Engines that must be operated in the idle mode for safety reasons, including but not limited to cranes and forklifts used in the construction industry; and

ii. Uses where freight drivers sleep in their cabs; provided, that the location of the idling is at least one-quarter mile from residential dwellings and from Residential zone district boundaries.

e. Emitting periodic, impulsive, or shrill sounds that exceed five dBA less than the maximum permitted between 7:00 am and 9:00 in Table 4.11-1.

2. Maximum Permissible Sound Levels.