This standard is drafted in accordance with rules in GB/T 1. 1-2009. This standard is proposed and managed by Standards and Metrology Research Institute of MOR. This standard is mainly drafted by Locomotive & Carway of Sciences Academy . Participating drafting companies of this standard include Qingdao Sifang Co.,Ltd.,Changchun Railway Vehicles Co.,Ltd, and Tangshan Railway Vehicle Co.,Ltd. Major drafters of this standard include Zhang of this standard: Xu Lei, Deng Xueshou, Wang Youwen and Zhang Li.