Classic Trolley BSTR31

SUPREME CORPORATION Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 1999-04-21
Personnel : B.L., S.C. and R.H.
Temperature (°F) : 42 Humidity (%) : 75
Wind Speed (mph) : Wind Direction : Calm
Barometric Pressure (in.Hg) : 30.05
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 B.L.
Exterior Ambient Noise Level dB(A): 41.2

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 76.7 1 77.2
2 76.8 2 77.4
3 76.9 3 77.1
4 77.1 4 76.9
5 76.9 5 77.2
Average of two highest actual noise levels = 77.0 dB(A) Average of two highest actual noise levels = 77.3 dB(A)