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The name interlocking is rarely used anymore. The new terminology is Control Point which is basically the same thing. NS Central Division uses the term "control point" in issuing 23A Forms for MoW workers or highrailers. <br /> <br />Control Point and Interlocking are the same; meaning that it is controlled by a dispatcher via CTC(Centralized Traffic Control). The dispatcher controls the signals and switches within that Control Point or Interlocking. Of course also you have to put into play the priority of the train. If it is an Intermodal, they usually get top priority and the manifest or mixed freight get the bottom of the list. <br /> <br />Hope this helps.
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