ORION II

BUS INDUSTRIES OF AMERICA, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 1994-06-06
Personnel : M=B.L.
Temperature (°F) : 75 Humidity (%) : 61
Wind Speed (mph) : 8 Wind Direction : WSW
Barometric Pressure (in.Hg) : 29.9
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 R.L.L.
Initial Sound Level Meter Calibration: true checked by R.L.L.
Exterior Ambient Noise Level dB(A): 47.3

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 67.8 1 70.8
2 67.1 2 70.3
3 67.4 3 70.3
4 68.0 4 69.9
5 67.6 5 70.4
Average of two highest actual noise levels = 67.9 dB(A) Average of two highest actual noise levels = 70.6 dB(A)