...車时刻表与行車命令制(Time Table and Train Order System)非自动号志区段人工闭制非自动号志区段人工闭制(Manual Block System)凭证闭塞制(Token Block System)通讯闭塞式向导闭塞式电气路牌式牌券闭塞式通讯闭塞式向导闭塞式电气路牌式牌券闭塞式现代运输学...
The so-called manual-block system takes the place of a dozen separate signals that help drivers adjust their speed and avoid colliding with other trains in the dark tunnels.