Canadian Pacific Kansas City Ltd.

Businesses and industry leaders are anxiously awaiting updates on when Canada's freight trains could start moving again now that the federal government has intervened in a work stoppage that halted all shipments for a full day.

Thousands of Canadian commuters may have to change their travel plans for a second day after a countrywide rail lockout shut down lines in major metropolitan areas.

In a first for Canada, freight traffic on its two largest railways has simultaneously stopped, threatening to upend supply chains trying to move forward from pandemic-related disruptions and a port strike last year.