D-40

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Exterior Noise Test

Accelerating from Constant Speed

Date : 1992-05-07
Personnel : B.L., B.R., B.S.
Temperature (°F) : 59 Humidity (%) : 47
Wind Speed (mph) : 5 Wind Direction : ENE
Barometric Pressure (in.Hg) : 28.37
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: false checked by B.L.
Exterior Ambient Noise Level dB(A): 36.8

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 76.6 1 78.5
2 76.0 2 78.3
3 75.5 3 78.2
4 4
5 5
Average of two highest actual noise levels = 76.3 dB(A) Average of two highest actual noise levels = 78.4 dB(A)