National Roads are major highways that connect different regions within a country, facilitating transportation and trade. They are typically maintained by the national government and are designed to support heavy traffic, including commercial vehicles. These roads play a crucial role in linking urban and rural areas, enhancing accessibility and economic development. In many countries, National Roads are part of a larger network that includes state and local roads. They often feature standardized signage and safety measures to ensure efficient travel. Examples of National Roads can be found in various countries, such as the U.S. Interstate System in the United States and the National Highways in India.