Section 484D.165 - Noise emission tests: Measuring sitesNoise measuring sites must meet the following requirements:
1. The site used for measuring noise from vehicles on the highway in NAC 484D.150 must meet the following conditions:(a) The location must be an open area free of large reflecting surfaces such as parked vehicles, signboards, buildings, bridges, hillsides or trees within a 100-foot radius of the microphone and within a 100-foot radius of the point on the centerline of the path of the vehicle nearest the microphone.(b) The surface of the ground between the microphone and the path of the vehicle must be free of standing water, shrubbery and of grass over 6 inches high.(c) The surface over which the vehicle travels must be dry and relatively smooth concrete or asphalt pavement free of extraneous material.2. The site used in measuring noise from new motor vehicles in NAC 484D.155 must meet the following conditions:(a) The location must be a flat open space free of large reflecting surfaces such as signboards, buildings, hillsides or trees within 100 feet of the microphone and within 100 feet of the centerline of the path of the vehicle from the point where the throttle is opened to the point where the throttle is closed.(b) The surface between the microphone and the path of the vehicle must be asphalt or concrete free of powdery snow, loose soil or ashes.(c) The surface over which the vehicle travels must be dry and relatively smooth concrete or asphalt pavement free of extraneous material.Nev. Admin. Code § 484D.165
[Dep't of Motor Veh., Noise Emissions Reg. § VI, eff. 1-21-72] - (Substituted in revision for NAC 484.165)