T80208 (CNG)

TRANSPORTATION MANUFACTURING CORPORATION (TMC) Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 1993-04-19
Personnel : B.L., B.S., and R.H.
Temperature (°F) : 66 Humidity (%) : 55
Wind Speed (mph) : 10 Wind Direction : w
Barometric Pressure (in.Hg) : 29.97
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 RL
Initial Sound Level Meter Calibration: false checked by RL
Exterior Ambient Noise Level dB(A): 36.3

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 75.1 1 79.9
2 75.6 2 79.6
3 75.0 3 79.2
4 74.8 4 79.6
5 74.6 5 80.4
Average of two highest actual noise levels = 75.4 dB(A) Average of two highest actual noise levels = 80.2 dB(A)