Abstract: The present invention relates to a system for aiding the movement of work trains on a railway line under construction having two tracks that are adjacent and two-way, managed from a central block PC by a PC chief. The system comprises a computer with means of management and of processing of data and an operation block diagram panel, means of communication between the PC chief and escort agents of the work trains for authorization requests to move in section, means of locating a train, connected to the computer, means of detecting the direction of travel of a train, connected to the computer, and means of entering the state of work of the sectors, connected to the computer. The system saves time by enabling a work train to move, under certain conditions, at the speed of the line.