Page "History of rail transport in Ireland" Paragraph 87

In the 1990s, the Republic experienced an economic boom ( known colloquially as the Celtic Tiger ).

This allowed substantial investment to be made.

34 new locomotives ( designated 201 Class ) were purchased from General Motors, including two for NIR.

New De Dietrich carriages were also purchased for the cross-border ' Enterprise ' service.

Meanwhile, the route network was also being upgraded to continuous welded rail ( CWR ) and old mechanical signalling was replaced by electronic signalling.