The onboard equipment is responsible for receiving ground command to generate a speed pattern, monitoring train movement, as well as ensuring train traffic safety. It includes _______________, Vital Computer, GSM-R Radio Transmission Unit, Speed and Distance processing Unit, Balise Transmission Module and Track Circuit Reader. 车载设备负责接收地面指令，生成速度模式，监控列车运行，并确保列车交通安全。它包括_______________，安全计算机，GSM-R无线传输单元，速度和距离处理单元，应答器传输模块和轨道电路阅读器。
A、Driver Machine Reader 人机阅读器
B、Driver Machine Interface 人机界面
C、Track Circuit轨道电路模块