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Sigma KEE - MultipleTrackRailway
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MultipleTrackRailway
MultipleTrackRailway is the subclass of Railway whose instances consists of two or more sets of tracks running in parallel, allowing motion in both directions along a route without the need for sidings and delays.
Relationships      
Parents Railway Railway is the subclass of LandTransitways that have rails along which Trains may travel. A railway consists of the rail bed, sleepers, tracks, electric rails, switches, sensors, lights, crossing grades, and any other integral machinery or parts of a section of railway.


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