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Problems on the edge of tram track subgrade and road street construction

In article the problem of independent tram track subgrade and road street design and construction in case of tram tracks integrated with streets pavement and track-road level crossings was concerned. Terminological dissimilarity applied in road and railway branches was pointed out. Types of problems performed on the edge of this branches were defined. Review and analysis of tram track subgrade constructional solutions used in Wrocław during last 25 years were made. Manners of solution defined problems were proposed. In summary importance of analyzed problems were highlighted and the necessity of obligatory rules revision was demonstrated.