Travel Ottawa is committing $300 million to what’s being hailed as the largest-ever investment in passenger rail service between Montreal and Toronto.

Via Rail’s CN Kingston Subdivision Project is a series of infrastructure improvements at eight locations along the 539-kilometre, double-track rail line.

The project is expected to boost capacity on the rail line by eliminating bottlenecks and reducing delay-causing conflicts between passenger and freight trains.

Sections of new third line track will be added to the existing line at multiple locations between Oshawa and Brockville.

A fourth track will be built at Via’s busy Belleville, Ont., station.

Donald Wright, Via’s chairman of the board, is calling Thursday’s announcement “nothing short of a reshaping of the Canadian railway map.”