Abstract: In view of the situation that the length of the control cable between the home signal (or the receiving signal) and the signal tower is about 3 km in the railway hub or the special station with long throat section, the yellow-flash-yellow signal aspect is unstable or cannot be displayed normally. This paper analyzes and studies this problem from the perspective of engineering design, and puts forward the design optimization solution.

Key words: home signal, yellow-flash-yellow circuit, design optimization

摘要： 针对在铁路枢纽或咽喉区较长的特殊站场中，会出现进站信号机或接车进路信号机与信号楼间控制电缆长度约达3 km的情况，其黄闪黄信号显示存在不稳定或者不能正常开放的问题，从工程设计角度进行分析研究，提出设计优化解决方案。

关键词: 进站信号机, 黄闪黄电路, 设计优化