The Noise Abatement Process PennDOT Home
50 Reference level Clothes dryer 60 2 times louder than 50 dBA Air conditioning unit 70 4 times louder than 50 dBA Pickup truck 50mph 50 80 8 times louder than 50 dBA Medium truck 50mph 50 90 16 times louder than 50 dBA Motorcycle 50mph 50
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