A superhighway is a large, modern highway designed for fast, long-distance travel. These roads typically have multiple lanes in each direction, no traffic lights or stop signs, and special entrance and exit ramps that let cars merge smoothly without slowing down other traffic.

The most famous superhighways in America are part of the Interstate Highway System, marked by red, white, and blue shield-shaped signs. These roads connect cities across the entire country, making it possible to drive from New York to California on controlled-access highways. Other countries have similar systems, called motorways in Britain or autobahns in Germany.

When superhighways were first built in the 1950s, they revolutionized American life. Trips that once took days on winding two-lane roads could suddenly be completed in hours. Families could visit distant relatives more easily, businesses could ship products faster, and suburbs grew as people could live farther from where they worked.

The term “information superhighway” became popular in the 1990s as a metaphor for the internet, comparing how data travels quickly across digital networks to how cars travel swiftly across physical superhighways.