[最も共有された！ √] double crossing over diagram 325847-Double crossing over diagram

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Double crossing over diagram-Crossover tracks, double crossovers including the central crossing frogs or diamond area, and single and double slip switches are included in this category The cross ties to support turnouts and crossovers can also be considered part of special trackwork, especially concrete switch ties, which require far more design and fabrication effort than ordinary timber switch tiesCalled the double crossover merging interchange ( DCMI ), it includes elements from the diverging diamond interchange, the tight diamond interchange, and the stack interchange It eliminates the disadvantages of weaving and of merging into the outside lane from which the standard DDI variation suffers A highway Uturn requires weaving, however