BB365

THOMAS BUILT

Exterior Noise Test

Accelerating from Standstill

Date : 1995-02-20
Personnel : R.L., B.R., & R.H.
Temperature (°F) : 51 Humidity (%) : 60
Wind Speed (mph) : 9 Wind Direction : WSW
Barometric Pressure (in.Hg) : 29.7
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.
Initial Sound Level Meter Calibration: true checked by R.L.
Exterior Ambient Noise Level dB(A): 40.1

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 75.3 1 74.7
2 75.0 2 74.6
3 75.5 3 74.3
4 74.8 4 74.4
5 75.3 5 75.2
Average of two highest actual noise levels = 75.4 dB(A) Average of two highest actual noise levels = 75.0 dB(A)