844 CNG

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Exterior Noise Test

Accelerating from Standstill

Date : 2002-01-14
Personnel : S.C., B.S. & M.H.
Temperature (°F) : 41 Humidity (%) : 74
Wind Speed (mph) : 5 Wind Direction : NE
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: true checked by S.C.
Exterior Ambient Noise Level dB(A): 51.8

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 69.2 1 69.1
2 68.9 2 68.3
3 68.4 3 68.8
4 68.9 4 69.8
5 68.8 5 69.1
Average of two highest actual noise levels = 69.1 dB(A) Average of two highest actual noise levels = 69.4 dB(A)