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A permanent way refers to the track and sleepers of a railway
line. This name originally came about because during the construction of railway lines, other tracks (ways) were used for
removing soil from cuttings, etc, the permanant way was the track that remained after these were removed. The name is not really
accurate, because frequent maintenance is required to give a smooth ride for trains, or indeed to keep the permanent way suitable
for any traffic at all.
See Rail tracks.
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