ECOMARK SHUTTLE BUS

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Exterior Noise Test

Accelerating from Constant Speed

Date : 1999-11-12
Personnel : B.L. & R.H.
Temperature (°F) : 47 Humidity (%) : 40
Wind Speed (mph) : 5 Wind Direction : SW
Barometric Pressure (in.Hg) : 30.31
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): 43.7

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 78.8
2 75.3 2 77.2
3 76.4 3 79.1
4 75.0 4 77.4
5 75.4 5 79.6
Average of two highest actual noise levels = 75.9 dB(A) Average of two highest actual noise levels = 79.4 dB(A)