U.S. highways, also known as the U.S. Route System, are a network of roads that connect cities and towns across the United States. Established in 1926, these highways are numbered and often marked with a shield-shaped sign. They serve as important routes for both local and long-distance travel, facilitating commerce and tourism. The system includes thousands of miles of roads, ranging from major thoroughfares to scenic byways. U.S. highways are distinct from Interstate highways, which are designed for faster travel and have specific construction standards. Together, they form a vital part of the nation's transportation infrastructure.