TC40102N

NOVA BUS

Exterior Noise Test

Accelerating from Standstill

Date : 1995-06-21
Personnel : B.L., S.C. and B.S.
Temperature (°F) : 83 Humidity (%) : 62
Wind Speed (mph) : 3 Wind Direction : sw
Barometric Pressure (in.Hg) : 30.07
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: true checked by BL
Exterior Ambient Noise Level dB(A): 38.5

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 74.2 1 74.5
2 73.8 2 77.1
3 73.8 3 74.7
4 73.7 4 74.5
5 73.3 5 74.6
Average of two highest actual noise levels = 74.0 dB(A) Average of two highest actual noise levels = 75.9 dB(A)