Abstract: The paper points out the risk of train overspeed caused by tail holding at 80 km/h after the train changes to FS mode in UUS section. In order to ensure safety, the inspection range of temporary speed restriction shall be extended as required. This paper analyzes three actual scenarios, puts forward a specific scheme to extend the inspection range of temporary speed restriction, and verifies the effectiveness and feasibility of the proposed scheme by field application, which provides a reference for the similar project application in the future.

Key words: train control center, temporary speed restriction, inspection range

摘要： 指出列车在UUS区段转为FS模式后以80 km/h进行车尾保持导致列车超速的风险。为确保安全，应根据要求对限速检查范围进行延长。对3种实际场景进行分析，并提出延长限速检查范围的具体方案。通过现场实际运用验证所提方案的有效性和可行性，为后续工程的应用提供借鉴。

关键词: 列控中心, 临时限速, 检查范围