介绍已经成功运用到我国青藏铁路的增强型列车控制系统(ITCS)功能、工作原理和工作模式、以及设备构成;ITCS所基于的铁路综合数字移动通信系统GSM-R;ITCS所引入的虚拟闭塞概念。 This paper introduces the ITCS function, working principle and mode of operation that have been successfully applied to the Qinghai-Tibet Railway in our country, as well as the equipment structure. The concept of virtual occlusion introduced by ITCS is based on GSM-R, an integrated digital mobile communication system .