MB55FD

TROLLEY ENTERPRISES INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 2001-06-20
Personnel : S.C., M.H. & B.S.
Temperature (°F) : 85 Humidity (%) : 65
Wind Speed (mph) : Wind Direction : Calm
Barometric Pressure (in.Hg) : 30.24
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 S.C.
Initial Sound Level Meter Calibration: true checked by S.C.
Exterior Ambient Noise Level dB(A): 64.2

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 80.7 1 80.7
2 80.4 2 80.5
3 79.5 3 79.6
4 79.7 4 80.0
5 78.9 5 79.7
Average of two highest actual noise levels = 80.6 dB(A) Average of two highest actual noise levels = 80.6 dB(A)