§ 164-6. Prohibited noise activities.

The following activities are prohibited:

A.

Vehicle horns. No person shall at any time sound any horn or other audible signal device of a motor vehicle unless it is necessary as a warning to prevent or avoid a traffic accident.

B.

Emissions from stationary or idling mobile sources. No mobile source engine shall be allowed to operate for more than three (3) consecutive minutes when the mobile source is not in motion except as follows:

(1)

When a mobile source is forced to remain motionless because of traffic conditions or mechanical difficulties over which the operator has no control;

(2)

When it is necessary to operate heating, cooling or auxiliary equipment installed on the mobile source when such equipment is necessary to accomplish the intended use of the mobile source;

(3)

To bring the mobile source to the manufacturer's recommended operating temperature;

(4)

When the outdoor temperature is below 20°F;

(5)

When the mobile source is being repaired.

C.

Exhaust discharge. No person shall discharge into the ambient air the blowdown of any steam vent or the exhaust of any stationary internal-combustion engine or air compressor equipment unless such discharge is through a muffler as defined by § 164-3 of this chapter or through an apparatus providing equal noise reduction.