Golden Gate Trolley

Cable Car Classics, Inc. Pdf Download PDF Report

Exterior Noise Test

Accelerating from Constant Speed

Date : 2001-05-17
Personnel : S.C., M.H. & B.S.
Temperature (°F) : 52 Humidity (%) : 76
Wind Speed (mph) : 8 Wind Direction : S
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 S.C.
Initial Sound Level Meter Calibration: false checked by S.C.
Exterior Ambient Noise Level dB(A): 47.2

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 81.9 1 83.5
2 81.7 2 83.0
3 81.5 3 83.1
4 81.8 4 83.7
5 82.2 5 82.8
Average of two highest actual noise levels = 82.1 dB(A) Average of two highest actual noise levels = 83.6 dB(A)