The O-2 Highway is a major roadway in South Korea that connects the cities of Seoul and Incheon. It serves as an important transportation route, facilitating the movement of goods and people between these two urban centers. The highway is known for its modern infrastructure and efficient traffic management. Opened in the early 2000s, the O-2 Highway features multiple lanes and various interchanges to improve accessibility. It plays a crucial role in the regional economy by supporting trade and commuting, making it a vital link in South Korea's transportation network.