RTS T-DRIVE

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Exterior Noise Test

Accelerating from Standstill

Date : 2001-02-08
Personnel : S.C., E.D., & P.M.
Temperature (°F) : 38 Humidity (%) : 71
Wind Speed (mph) : 3 Wind Direction : W
Barometric Pressure (in.Hg) : 30.3
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): 51.5

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 75.7 1 77.6
2 75.4 2 77.4
3 75.0 3 77.7
4 75.4 4 77.5
5 75.0 5 77.5
Average of two highest actual noise levels = 75.6 dB(A) Average of two highest actual noise levels = 77.7 dB(A)