Interstate Highway System (USA)

The Interstate Highway System is a network of controlled-access roads across the United States, designed for high-speed travel. Established in 1956, it connects major cities, facilitates commerce, and enhances national defense. Funded by federal and state governments, it features standardized signage and safety measures. The system spans over 47,000 miles, enabling efficient transportation of goods and people. Its impact on American society includes economic growth, suburban expansion, and improved accessibility, making it a critical part of the country’s infrastructure.