The United States Numbered Highway System is a network of roads that connects cities and regions across the United States. Established in 1926, it features numbered highways that are easy to identify and navigate. The system includes both primary routes, which are typically two-digit numbers, and secondary routes, which have three-digit numbers. These highways are maintained by state and local governments, ensuring safe travel for millions of drivers each year. The system plays a crucial role in the country's transportation infrastructure, facilitating commerce and tourism while providing essential access to rural and urban areas alike.