Definition of "remodelling"

In the nature of things, much railway capital expenditure on stations and depots was in the immediate vicinity, if not in the heart, of towns, and extensions or remodellings, apart from being extremely costly, may be entirely negatived by the impossibility of securing the necessary land.

1945 March and April, T. F. Cameron, “New Works Procedure”, in Railway Magazine, page 71

This principle was therefore incorporated in a large-scale resignalling scheme that has involved: remodelling of the layout to suit the use of only six running lines across the Clyde, [...]

1961 March, “The new Glasgow Central signalbox”, in Trains Illustrated, page 177