40102 (METRO)

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Exterior Noise Test

Accelerating from Constant Speed

Date : 1993-03-26
Personnel : B.L., S.C. and R.H.
Temperature (°F) : 41 Humidity (%) : 90
Wind Speed (mph) : 4 Wind Direction : ne
Barometric Pressure (in.Hg) : 30.25
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 BL
Initial Sound Level Meter Calibration: false checked by BL
Exterior Ambient Noise Level dB(A): 39.4

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 75.9 1 78.7
2 75.9 2 78.1
3 75.9 3 78.4
4 75.7 4 78.4
5 75.6 5 78.5
Average of two highest actual noise levels = 75.9 dB(A) Average of two highest actual noise levels = 78.6 dB(A)