Portal:Trains/Featured picture/Week 16, 2006

A fully assembled level junction ready to be installed.

In U.S. railroad practice, a level junction (or in the United Kingdom a flat junction) is a railway junction that has a track configuration in which merging or crossing railroad lines provide track connections with each other that require trains to cross over in front of opposing traffic at grade. The structure is sometimes called a diamond junction or diamond crossing in reference to the diamond-shaped center. Routings must be controlled by signals and an interlocking plant, or by an automated Centralized Traffic Control (CTC) system. The two tracks need not be of the same gauge.

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