T80208

TRANSPORTATION MANUFACTURING CORPORATION (TMC)

Exterior Noise Test

Accelerating from Constant Speed

Date : 1990-11-19
Personnel : S.M., B.L., & D.K.
Temperature (°F) : 57 Humidity (%) : 24
Wind Speed (mph) : Wind Direction : NW
Barometric Pressure (in.Hg) : 30.19
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: false checked by
Exterior Ambient Noise Level dB(A): 47.7

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 77.7 1 78.4
2 77.5 2 79.1
3 77.4 3 80.2
4 4
5 5
Average of two highest actual noise levels = 77.6 dB(A) Average of two highest actual noise levels = 79.7 dB(A)