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| INGENO Europrojekte | I00s172 Computerised Signal Box with Continuous Automatic Train Running for Munich’s S-Bahn Main Line The passenger volume has grown considerably since the line was put into operation in 1972. Originally designed to handle 250,000 passengers daily, today the line serves 750,000 passengers. Since the throughput capacity of the Munich S-Bahn main line could no longer be increased with the available signalling technology, the only way to extend the transport capacities was to reduce the time interval between trains. To increase the frequencies of the trains, the Munich main line from München-Ost-Postbahnhof to Passing had to be equipped with continuous automatic train running control. This standard allows trains to succeed closely behind each other in the station platform area and to thereby diminish intervals between trains. After the upgrade the cycle time of some S-Bahn lines could be shortened from 20 to 10 minutes. From München-Ost to Hackerbrücke the main line runs in a tunnel. There, an computerised signal box, consisting of a sub-control centre and an off-site signal box computer, was erected by Siemens. The equipment is operated from the Munich control centre. Equipment of the main line was completed in 52 weekend closures for the tunnel works and in night closures for the field works. The computerised signal box was successfully put into operation in August 2004. Within the framework of this 420 million euro project, INGENO Europrojekte was responsible for the planning of the cable engineering works and the signalling equipment, the elaboration of a commissioning concept and the supervision of the construction works by a signal planner. For the conversion of the tunnel, INGENO Europrojekte installed special constructions for mounting the signal lights (special design because of the clearance gauge) and for the signal switching cabinets as well as axle counters and speed testing equipment.
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