ORION V

BUS INDUSTRIES OF AMERICA, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 1990-07-09
Personnel : S.M., D.F., & B.J
Temperature (°F) : 85 Humidity (%) : 68
Wind Speed (mph) : 2 Wind Direction : SW
Barometric Pressure (in.Hg) :
Verify that microphone height is 4 feet, wind speed is less than 12 mpg and ambient temperature is between 30 F and 90 F: true checked by
Initial Sound Level Meter Calibration: true checked by
Exterior Ambient Noise Level dB(A): 48.0

Accelerating from Constant Speed
Curb (Right) Side
Accelerating from Constant Speed
Street (Left) Side
Run # Measured Noise Level dB(A) Run # Measured Noise Level dB(A)
1 74.0 1 75.0
2 74.0 2 74.9
3 74.2 3 75.2
4 74.0 4 75.0
5 74.0 5 74.8
Average of two highest actual noise levels = 74.1 dB(A) Average of two highest actual noise levels = 75.1 dB(A)