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The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Highway System in the United States. The system extends throughout the contiguous United States and has ...
List of Interstate Highways. There are 70 primary Interstate Highways in the Interstate Highway System, a network of freeways in the United States. These primary highways are assigned one- or two-digit route numbers, whereas their associated auxiliary Interstate Highways receive three-digit route numbers. Typically, odd-numbered Interstates run ...
A map of the Strategic Highway Network, one component of the NHS Map of average freight truck traffic on the NHS in 2015. According to the Federal Highway Administration, the 160,000-mile (260,000 km) National Highway System includes roads important to the United States' economy, defense, and mobility, from one or more of the following road networks (specific routes may be part of more than ...
1948-era U.S. Highway. 1926-era U.S. Highway. The United States Numbered Highway System is an older system consisting mostly of surface-level trunk roads, coordinated by the American Association of State Highway and Transportation Officialsand maintained by state and local governments. U.S. Highways have been relegated to regional and ...
11th edition of the MUTCD, published December 2023. In the United States, road signs are, for the most part, standardized by federal regulations, most notably in the Manual on Uniform Traffic Control Devices (MUTCD) and its companion volume the Standard Highway Signs (SHS).
Highway shields for Interstate 69 and Interstate 70, highways with true gaps and freeway gaps Interstate Highways in the 48 contiguous states System information Formed June 29, 1956 Highway names Interstates Interstate X (I-X) System links Interstate Highway System Main Auxiliary Suffixed Business Future I-70 briefly follows an at-grade portion of US 30 with traffic lights in Breezewood ...
The Driver License Compact, a framework setting out the basis of a series of laws within adopting states in the United States (as well as similar reciprocal agreements in adopting provinces of Canada), gives states a simple standard for reporting, tracking, and punishing traffic violations occurring outside of their state, without requiring individual treaties between every pair of states.
Interstate 80. Interstate 80 ( I-80) is an east–west transcontinental freeway that crosses the United States from San Francisco, California, to Teaneck, New Jersey, in the New York metropolitan area. The highway was designated in 1956 as one of the original routes of the Interstate Highway System; its final segment was opened in 1986.