World Trans T24

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

Exterior Noise Test

Accelerating from Standstill

Date : 2016-09-01
Personnel : S.R., E.D. & C.S.
Temperature (°F) : 72 Humidity (%) : 76
Wind Speed (mph) : 5 Wind Direction : N
Barometric Pressure (in.Hg) : 30.0
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): 39.9

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 72.2 1 70.8
2 72.5 2 72.8
3 71.6 3 71.9
4 71.8 4 71.1
5 72.0 5 70.8
Average of two highest actual noise levels = 72.4 dB(A) Average of two highest actual noise levels = 72.4 dB(A)