Szukana fraza: [Abstrakt = "A high construction cost of high speed railway lines requires a precise optimisatnion of the lines’ geometrical layout. Specific and strong problems arise in agglomerations, where due to high urban density design of a high speed line is difficult, but at the same time a number of inhabitants justifies service of such agglomerations by high speed trains. The problem is illustrated by Poznań agglomeration, with an analysis of 6 variants of a high speed line’s path. The analysis yielded negative results of the line’s elongation aiming at passing through the main station. A variant keeping accordance with the high speed line’s general direction at a cost of building a tunnel under the main station yielded the best operational characteristics, but at the same time generated the maximum cost. The best variants were those assuming location of the high speed line outside the main station \(but within the main city\) with connector lines allowing a classical speed access to the main station"]

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