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Limits and measurement methods for exhaust pollutants from motorcycles and mopeds under two-speed idle conditions

摩托车和轻便摩托车排气污染物排放限值及测量方法（双怠速法）

GB 14621-2011 is a current mandatory Chinese national standard for Limits and measurement methods for exhaust pollutants from motorcycles and mopeds under two-speed idle conditions. It appears in the Auto compliance cluster with a product safety focus and has an implementation date of Oct 1, 2011.

Applicability depends on product scope, certification route, competent authority notices and transition rules. Request a translation or verify source before using this record in a compliance decision.