本书为铁路信号安全数据网（TBT 3547-2019）的英译本。本标准规定了铁路信号安全数据网的一般要求、组网要求、组网结构、组网设备、网络接口、网络管理、网络地址分配管理和网络安全。本标准适用于信号安全数据网的设计、产品制造、运用和维护。 This standard specifies the general requirements, networking requirements, networking structure, networking equipment, network interface, network management, network address distribution management and network security of railway signal safety data network.This standard is applicable to the design, product manufacturing, application and maintenance of signal safety data network.