G-Force F550 CNG

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Exterior Noise Test

Accelerating from Constant Speed

Date : 2012-02-02
Personnel : J.S., T.S. & B.L.
Temperature (°F) : 39 Humidity (%) : 70
Wind Speed (mph) : 9 Wind Direction : NW
Barometric Pressure (in.Hg) :
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 B.L.
Initial Sound Level Meter Calibration: true checked by B.L.
Exterior Ambient Noise Level dB(A): 33.8

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 72.6 1 72.9
2 72.7 2 72.8
3 73.5 3 72.8
4 72.6 4 71.2
5 73.1 5 71.9
Average of two highest actual noise levels = 73.3 dB(A) Average of two highest actual noise levels = 72.9 dB(A)