The founding of the joint venture Breitspur Planungsgesellschaft mbH took place in 2008, with the four partners taking equal 25 % stakes in the company.

On 6 April, 2010 the participating railway corporations and nations signed an agreement in Bratislava that gave the go-ahead to a pre-feasibility study for the Breitspur Planungsgesellschaft project. The study was completed in 2011 and conclusively confirmed the technical and commercial feasibility of the scheme.

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