| 摘要 |
The invention relates to an under- construction railway line comprising two adjacent two-way tracks which are controlled from a central signal box PC (90) by a central signal box operator. According to the invention, the tracks are divided into sectors Si which extend between two end signal boxes Pi (i and i+2) and on which trains can travel in block or cautious running mode. The inventive system consists of: a computer (94) comprising means for managing and processing data (95, 96, 97) and a synoptic operating display (70); means (81, 91) enabling communication between the central signal box operator and work train escort officials such that an escort official can request (M1) authorisation from the central signal box operator to travel in block mode in one direction (101) on a given sector Si; train-locating means (121, 122; 82) which are connected (81, LR, 91) to the computer; means (123) for detecting the direction of movement of a train, which are connected (81, LR, 91) to the computer; means (98) for inputting the operating status (CE) of the sectors, which are connected to the computer; and processing means (96) which process the data supplied by the detection and locating means. In this way, if no other train is travelling on the sector in question Si, no other train is travelling on the next sector Si+2 in the opposite direction and the adjacent sector Si+ 1 of sector Si of the adjacent track is not in use, the central signal box operator authorises the escort official of the train to travel in block mode on the sector in question Si from end i to end i+1.
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