Interurban refers to transportation systems that connect different urban areas, typically involving trains or buses. These services are designed to facilitate travel between cities, making it easier for people to commute for work, education, or leisure. Interurban transport plays a crucial role in regional connectivity and economic development. Historically, interurban railways were popular in the late 19th and early 20th centuries, linking cities and towns across regions. Today, modern interurban services often include high-speed trains and express bus routes, enhancing accessibility and reducing travel times between major urban centers like New York City and Washington, D.C..