MB55FD

TROLLEY ENTERPRISES INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

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: false checked by S.C.
Exterior Ambient Noise Level dB(A): 59.9

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 77.0 1 78.6
2 76.7 2 79.0
3 77.0 3 78.7
4 76.3 4 78.5
5 76.8 5 79.2
Average of two highest actual noise levels = 77.0 dB(A) Average of two highest actual noise levels = 79.1 dB(A)