SPIRIT

GILLIG CORPORATION

Exterior Noise Test

Accelerating from Standstill

Date : 1990-12-14
Personnel : SM and BL
Temperature (°F) : 30 Humidity (%) : 12
Wind Speed (mph) : 2 Wind Direction : nw
Barometric Pressure (in.Hg) : 30.24
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 SM
Initial Sound Level Meter Calibration: true checked by SM
Exterior Ambient Noise Level dB(A): 42.5

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 69.7 1 69.8
2 69.8 2 70.2
3 69.7 3 70.1
4 70.2 4 70.2
5 5
Average of two highest actual noise levels = 70.0 dB(A) Average of two highest actual noise levels = 70.2 dB(A)