Тема: to Дима Рогачев Where considerable gradients occur or freight trains are unusually long and heavy, concentration of locomotives at a train’s head can strain couplings and undesirably delay transmission of full braking power to the train’s rearmost cars. In such conditions several railroads, principally in North America, employ crewless “slave” locomotives that are inserted partway down the train. Radio signals transmitted from the train’s leading locomotive cause the slave locomotive’s controls to respond automatically and correspondingly to all operations of the controls. >>ССылка<<
