التفاصيل البيبلوغرافية
| العنوان: |
Highway identification of exhaust system noise problems. |
| المؤلفون: |
Kessler, F. M., DiPolvere, E., Van Ouwerkerk, M. |
| المصدر: |
Journal of the Acoustical Society of America; 1983, Vol. 74 Issue S1, pS45-S45, 1p |
| مستخلص: |
To reduce the number of excessively noisy vehicles on the road, a simplified noise control enforcement procedure was developed and tested. This procedure utilizes the 'trained' ear of enforcement officials in detecting faulty, modified, or absent mufflers and exhaust systems. The purpose of this study was to evaluate whether or not the trained ear can be utilized as a screening device for 'probable cause' to stop a vehicle for inspection of the exhaust system resulting in the citation of the driver for a mechanically defective exhaust system. Two teams conducted these tests. The first team included the 'spotting officer' and a person who recorded the pass-by sound level of all vehicles. The second team consisted of an inspection officer and a person making stationary sound level measurements. A majority of the vehicles called loud by the 'spotting' officer had pass-by sound levels 5-10 dB below the pass-by standard for that class of vehicle. This indicates that the quality of the sound emitted by such vehicles is distinctive and that the officers are able to detect defective exhausts prior to the defects causing the excessive noise to exceed the pass-by standard. Numerous additional findings are discussed. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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