permanent way

The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and British terminology, both of which diverge significantly from the later North American and other usages.
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permanent 
 way 

permanent way
permanent way, the roadbed and superstructure of a finished railway; -- so called in distinction from the contractor's temporary way...
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permanent way
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