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ISIRI 4243 is a standard published by the Institute of Standards and Industrial Research of Iran (ISIRI) based on Directive 70/157/EEC. It defines "permissible sound level and the exhaust system of motor vehicles".〔()〕 The first edition was published in 2002 and was later amended and published in 2010 based on Directive 2007/34/EC.〔 ==Related sources== Other related sources are as follows: *ISIRI 6924 The type approval of motor vehicles and their trailers 〔()〕 *ISO/DIS 10534:2000- Acoustics - Determination of sound absorption coefficient and impedance by a tube method〔 *ECE 51 - Uniform provisions concerning the approval of motor vehicles having at least four wheels with regard to their Noise Emissions〔 *ECE 59 - Replacement silencing systems.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「ISIRI 4243」の詳細全文を読む スポンサード リンク
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