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The Diabolo project created a new railway line serving Brussels National Airport. It is so called because of its shape: the line forms a chord between the Brussels-Leuven line going east and the new Brussels-Antwerp line going north, and connects with them via a triangular junction at each end. Its addition to the network permits a much more flexible airport railway service to be provided: as well as mainline trains going north and east, future high-speed services between London, Paris, Amsterdam and Cologne could call there. This would make Brussels National Airport a fully-fledged international railway station on the model of Amsterdam's Schiphol or Paris' Charles de Gaulle. Before the project, the airport station was a terminus, linked only to the Brussels-Leuven line. The connection from the airport station to the new line was built by ''SA Diabolo'' in a Public Private Partnership. SA Diabolo will maintain and rent the infrastructure to Infrabel for 35 years. In 2045 it will sell to Infrabel for 1 Euro. The three platforms of the existing railway station were extended to allow Intercity trains. Just under 3 km of line runs with slab track through a combination of cut and cover double track and single bore tunnels going the 25N line in both directions with flyover junctions. The 25N line was built by Infrabel along the exceptionally broad (40m) central reservation of the A1/E19 motorway from Schaerbeek/Schaarbeek to the new Mechelen station. It was built for 220 km/h operation and equipped with TBL1+ and ETCS level 1 signaling. The bridge span connecting it to the existing line at the northern end was placed in May 2009 and the tunnel into the airport at the southern end has been dug. The line was officially opened as planned on Friday, 8 June 2012 by King Albert. The first train from Mechelen to the airport ran on 10 June 2012 with a journey time of 8 minutes in place of the previously required 40 minutes. The completion of the Diabolo project and the Schuman-Josaphat tunnel are key infrastructure components needed for the rationalization of Brussels suburban rail services into the Brussels RER, whose inauguration is planned between 2015 and 2018. ==References== 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Diabolo project」の詳細全文を読む スポンサード リンク
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