The standard is drafted on the basis of rules proposed in GB/T1. 1-2009.The standard is managed by Standards and Metrology Research Institute, Ministry of Railways.The standard is drafted by Infrastructure Inspection Research Institute of China Academy of Railway Sciences and Beijing IMAP Technology Co., Ltd.The standard is mainly drafted by Tian Xinyu, Tao Kai, Liu Xiubo, Yang Fei, Li Guoqing, Wang Weidong, Chen Dongsheng, Liu Weizhen and Zhao Gang.