作为汽车安全的"最后一道防线"，汽车刹车系统一直备受争议，这些年的"单踏板之争"，纠结的也都是安全这个议题。毕竟，刹车系统的安全性，直接决 定着能否避免某些意外事故，守护驾乘安全。 EHB（也就是电子液压制动系统）作为"过渡性方案"，逻辑上比传统方案更具安全性，毕竟有了电子控制单元，可以实现单轮制动力精准分配了，集成 ABS、ESP 等主动安全功能之后，复杂路况下的制动稳定性有所提升。 不过，EHB 毕竟还在液压体系的范畴里，管路维护成本高、轻量化效果有限是其一，而且得配备冗余备份系统应对电控故障，安全隐患还是比较大。 而 EMB 就不一样了，这个技术其实就是全线控制动技术。它彻底摒弃了传统液压管路，核心逻辑是"电机直驱"。也就是每个车轮配备独立驱动电机，踏 板信号经电子控制单元处理后，直接指令电机通过减速机构驱动制动卡钳，完成制动力输出。 不过，明年开始，可能大家就不需要纠结刹车安全这件事了，因为，线控制动这个技术被新国标开了"绿灯"，可能要"上车"了。而如果真是这样，明年刹 车可能真会迎来史诗级更新。 那么，EMB 到底是什么？这种线控制动技术如果普遍用在汽车上，对咱们老百姓来说，会不会安全升级呢？接下来 ...

Core Points - The new national standard for passenger car brake systems (GB 21670-2025) will be implemented on January 1, 2026, replacing the 2008 version, reflecting the government's careful consideration and responsiveness to industry feedback [2][3][4]. Group 1: Key Features of the New Standard - The new standard introduces the definition and requirements for Electronic Transmission Brake Systems (ETBS), which includes fully dry electronic mechanical brake systems (EMB) and electronic hydraulic brake systems (EHB) without mechanical backup [4][5]. - The standard emphasizes the transition from semi-line control to fully line control brake systems, ensuring safety while encouraging technological innovation [4][5]. - The new standard significantly increases the requirements for functional safety in brake systems, mandating specific fault types and testing conditions for verification [5][6]. Group 2: Industry Impact and Technological Evolution - The implementation of the new standard is expected to guide the technological evolution of brake systems and provide a framework for industry practices, reducing fragmentation in development [5][6]. - The new requirements for functional safety will compel suppliers to enhance their safety systems, including the establishment of ISO 26262 safety frameworks and compliance with GB/T 34590 standards [5][6]. - The standard's alignment with international regulations (ECE R13-H) will facilitate the export of Chinese passenger vehicles, reducing trade barriers and enhancing competitiveness in global markets [10][11]. Group 3: Commercialization of EMB - The new standard is anticipated to accelerate the commercialization of EMB products, although initial costs may be 20% to 30% higher than traditional systems due to advanced components [12][13][14]. - Long-term, EMB systems are expected to become more cost-effective through scale and platform design, offering superior performance in terms of response speed and redundancy [14][15]. - The standard provides a "green light" for EMB technology, allowing companies with advanced R&D to lead in the market, while ensuring safety standards are maintained [15].