T24

Collins Bus Corp. d.b.a. World Trans Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 2016-09-28
Personnel : T.S., S.R. & S.B.
Temperature (°F) : 68 Humidity (%) : 51
Wind Speed (mph) : 11 Wind Direction : ESE
Barometric Pressure (in.Hg) : 30.1
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): 46.5

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 71.5 1 72.2
2 72.6 2 72.3
3 71.0 3 72.4
4 72.0 4 71.0
5 72.8 5 71.9
Average of two highest actual noise levels = 72.7 dB(A) Average of two highest actual noise levels = 72.4 dB(A)