Hillsboro, OR Noise Ordinances: Vehicle Noise (2026)

Sounding of any horn, signal or other device on a motor vehicle, while in motion, except as a danger signal. Exhaust brakes may only be applied to stop or slow during an emergency;B.Use of sound-producing devices including musical instruments, loudspeakers, amplifying devices, public address systems, radios, television sets, computers and any other electronic devices that play back audio or audio video recordings;C.Operation of any gong or siren upon any vehicle, other than police, fire or other emergency vehicle, except during sanctioned parades;D.Use of any motor vehicle in such a condition or manner so as to create loud or unnecessary sounds, grating, grinding, rattling or other noise;