D-60

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Exterior Noise Test

Accelerating from Constant Speed

Date : 1993-07-30
Personnel : B.L., S.C. & R.H.
Temperature (°F) : 69 Humidity (%) : 78
Wind Speed (mph) : 9 Wind Direction : NW
Barometric Pressure (in.Hg) : 29.86
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 R.L.L.
Initial Sound Level Meter Calibration: false checked by R.L.L.
Exterior Ambient Noise Level dB(A): 47.8

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 75.1 1 77.7
2 74.9 2 78.5
3 75.7 3 77.1
4 76.0 4 76.6
5 75.7 5 78.1
Average of two highest actual noise levels = 75.9 dB(A) Average of two highest actual noise levels = 78.3 dB(A)