That is generally correct, sir, especially the very high-speed types of operations: 240 to 300 kilometres per hour is a completely dedicated track. The one exception to that is in the northeast corridor in the U.S. between Baltimore and Washington and Boston, which I believe your committee has studied. Sections of that are operated at 135 to 150 miles per hour. One section of about 30 miles does have fairly significant freight volumes, and they manage their way through that, but I don't think it's their choice. It is not something they would like to have for the long term, because it does pose the sorts of challenges I spoke about in my remarks.
Generally speaking, for the bulk of the operations you describe, it is a separate infrastructure.