T80208

TRANSPORTATION MANUFACTURING CORPORATION (TMC)

Exterior Noise Test

Accelerating from Standstill

Date : 1990-11-20
Personnel : S.M. & B.L.
Temperature (°F) : 52 Humidity (%) : 33
Wind Speed (mph) : 7 Wind Direction : NNE
Barometric Pressure (in.Hg) : 30.4
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
Initial Sound Level Meter Calibration: true checked by
Exterior Ambient Noise Level dB(A): 47.9

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 78.8 1 79.9
2 78.7 2 79.7
3 79.0 3 79.3
4 78.9 4 79.5
5 5
Average of two highest actual noise levels = 79.0 dB(A) Average of two highest actual noise levels = 79.8 dB(A)