Go to New Version of This Page
This old version has not been updated since 2016,
but we're leaving it in case you prefer it. Show What's New
Please update your links from the new version.
interstate as in: interstate commerce
relating to the mutual relations between states — especially of the United States
Note that interstate is often contrasted with intrastate. An intrastate highway is used to move from one location in a state to another, rather than to move between states. Similarly, interstate commerce is business between states; whereas intrastate commerce affects a state without affecting other states. Under the U.S. Constitution, the interstate/intrastate distinction is important when determining when the federal government has authority to override state government.