National Highway System

Many countries have a network of national highways:Australia has a National Highway system.Canada has a National Highway System.[1]China has a series of National Highways.China also has a National Trunk Highway System.India has a network of National Highways.Japan has a system of national highways.Pakistan has a network of National Highways.South Africa has a National Road system.The United States has a National Highway System.The United States also has a National Defense Highway System, better known as the Interstate Highway System.The United States also has roads named National Road, National Freeway and National Old Trails Highway.Vietnam has a network of National Highways.[2]
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This system of highways designated and approved in accordance with the provisions of 23 U.S.C. 103b). (23CFR500)