Outside Salem-Keizer Urban Growth Boundary: using a sound measuring device at the complainant’s property line closest to the noise source, or within the complainant’s dwelling unit if it is on the same property as the noise source but not the source of the sound, the sound level shall not exceed 55 dBA between 10:00 p.m. and 7:00 a.m. or 65 dBA between 7:00 a.m. and 10:00 p.m. except if the sound producing device is an off-road vehicle (see below).
Within Salem-Keizer Urban Growth Boundary: it is unlawful to create any noise disturbance or sound plainly audible within any dwelling unit other than the source between 10:00 p.m. and 7:00 a.m. the following day. The following are noise disturbances: dynamic braking devices, idling engines more than 15 consecutive minutes between 10:00 p.m. and 7:00 a.m. and motor vehicle repair and testing during the same time period, steam whistles, and sirens. Generally, maximum sound levels are 55 dBA during the day and 45 dBA at night for residential or noise sensitive areas. Commercial areas are allowed 60 dBA during the day and 55 at night; industrial areas are allowed 65 dBA during the day and 60 dBA at night, with certain exceptions for domestic power equipment, commercial construction, etc.