The Interstate Highway System is a network of highways in the United States designed for fast and efficient travel. Established in 1956, it connects major cities and regions, facilitating commerce and transportation. The system includes over 47,000 miles of roads, allowing for long-distance travel across the country. Interstate highways are characterized by their limited access, meaning they have few entry and exit points, which helps maintain high speeds. They are also designed with safety features such as wide lanes and emergency shoulders. This system plays a crucial role in the U.S. economy and daily life, supporting both personal and commercial transportation.