MB55 CHASSIS

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Exterior Noise Test

Accelerating from Constant Speed

Date : 2006-03-06
Personnel : B.S., T.S. & S.C.
Temperature (°F) : 38 Humidity (%) : 37
Wind Speed (mph) : 3 Wind Direction : NW
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 S.C.
Initial Sound Level Meter Calibration: false checked by S.C.
Exterior Ambient Noise Level dB(A): 38.7

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 70.8 1 71.1
2 70.4 2 71.8
3 70.5 3 71.8
4 70.4 4 72.6
5 70.8 5 72.9
Average of two highest actual noise levels = 70.8 dB(A) Average of two highest actual noise levels = 72.8 dB(A)