In 1997 the Council of Ministers commissioned a review to update work originally undertaken in the late 1980's to determine the costs of improving the condition of, and reducing congestion on, the 25,000 kilometre network of key interprovincial and international road linkages.

Undertaken jointly by the federal, provincial and territorial transportation departments, the reports prepared and released in 1998 included:

1. The National Highway System: Condition and Investment Needs Update 1997;

2. The Economic Context of an Efficient National Highway System: A review of the Literature and International Experience September 1998;

3. Highway User Benefits Analysis of the National Highway System.

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