A registration number coded continuous cab signal (汽车的)注册号码电码连续式机车信号
Coded continuous cab signal series-excited generator 电码连续式机车信号串励发电机同步信号
In automatic blocking sections and within stations, 18 low-frequency messages are provided by the frequency-shift or coded track circuits to satisfy the requirements of the cab signal, as well as the requirements from ATP upon the wayside continuous messages. 自动闭塞区间、站内采用移频轨道电路或电码化提供18个低频信息,除满足机车信号显示需要外,还满足列车超速防护装置对地面连续信息的要求。