42.5-BRT.01

NORTH AMERICAN BUS INDUSTRIES Download PDF Report

Date	:	2008-04-17
Personnel	:	BS, TS and SC
Temperature (°F)	:	70	Humidity (%)	:	24
Wind Speed (mph)	:	5	Wind Direction	:	sse
Barometric Pressure (in.Hg)	:	30.15
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 SC
Initial Sound Level Meter Calibration: false checked by SC
Exterior Ambient Noise Level dB(A): 39.8

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	76.8	1	82.0
2	76.8	2	82.1
3	75.8	3	80.6
4	76.4	4	82.1
5	76.7	5	82.0
Average of two highest actual noise levels = 76.8 dB(A)		Average of two highest actual noise levels = 82.1 dB(A)