CN modifies freight operations in Western Canada due to severe cold weather conditions

MONTREAL, Jan. 29, 2008 — CN (TSX:CNR)(NYSE:CNI) announced today that due to the extreme cold and wind conditions, the Company has temporarily reduced freight service in most areas of Western Canada.

“The health and safety of our employees and the security of our customers' shipments are CN's top priority. After carefully evaluating the situation in Western Canada, we have determined that modifying our freight operations is the most prudent course of action for all our stakeholders,” said E. Hunter Harrison, president and chief executive officer of CN.

CN expects the modified freight operations to continue for up to 36 hours. Customers should expect delayed transit times for their shipments and will be regularly informed on the status of CN's railway as the situation changes.

About CN

CN – Canadian National Railway Company and its operating railway subsidiaries – spans Canada and mid-America, from the Atlantic and Pacific oceans to the Gulf of Mexico, serving the ports of Vancouver, Prince Rupert, B.C., Montreal, Halifax, New Orleans, and Mobile, Ala., and the key metropolitan areas of Toronto, Buffalo, Chicago, Detroit, Duluth, Minn./Superior, Wis., Green Bay, Wis., Minneapolis/St. Paul, Memphis, St. Louis, and Jackson, Miss., with connections to all points in North America. For more information on CN, visit the company's website at www.cn.ca/about/en_about.shtml .

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