This version, as one of CHINA RAILWAY standards in English series, is translated under the organization of China Railway Economic and Planning Research Institute authorized by CHINA RAILWAY as per relevant procedures and regulations.This Specification is the official English language version of Q/CR 9655-2015. The Chinese version of this Specification was issued by CHINA RAILWAY and came into effect on May 1, 2015. In case of discrepancies between the two versions, the Chinese version shall prevail. CHINA RAILWAY owns the copyright of this English versionChina Railway Signal and Communication Shanghai Engineering Bureau Group Co., Ltd, prepared the English version. China Railway Signal and Communication Engineering Group Co., Ltd. provided great support during review of this English version.Your comments are invited and should be addressed to China Railway Economic and Planning Research Institute, 29B, Beifengwo Road, Haidian District, Beijing, 100038, P. R. China.Email:jishubiaozhunsuo@126. comThe translation was performed by Xia Wei, Zhou Yi, Feng Yanyuan, Zhao Linjie, Li ShihanThe translation was reviewed by Wang Lingling, Wang Lei, Yang Sibo, Liu Lihai, Shao Xiang, Liu Yang, Jia Kelin, Zhang Yun.