G-Force F550 CNG

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Exterior Noise Test

Accelerating from Standstill

Date : 2012-02-02
Personnel : J.S., T.S. & B.L.
Temperature (°F) : 37 Humidity (%) : 70
Wind Speed (mph) : 9 Wind Direction : NW
Barometric Pressure (in.Hg) : 30.11
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): 37.4

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 68.8 1 68.4
2 67.6 2 68.9
3 69.4 3 69.0
4 68.2 4 69.4
5 68.9 5 68.8
Average of two highest actual noise levels = 69.2 dB(A) Average of two highest actual noise levels = 69.2 dB(A)