VINTAGE TROLLEY

EBUS, INC. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Standstill

Date : 2002-02-08
Personnel : S.C., B.S. & E.D.
Temperature (°F) : 40 Humidity (%) : 45
Wind Speed (mph) : 8 Wind Direction : W
Barometric Pressure (in.Hg) : 30.14
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 S.C.
Initial Sound Level Meter Calibration: true checked by S.C.
Exterior Ambient Noise Level dB(A): 49.8

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 61.3 1 62.3
2 61.7 2 62.2
3 61.4 3 61.9
4 61.6 4 62.1
5 61.7 5 62.3
Average of two highest actual noise levels = 61.7 dB(A) Average of two highest actual noise levels = 62.3 dB(A)