The Seohaean Expressway is a major highway in South Korea that connects the cities of Seoul and Busan. It spans approximately 400 kilometers and serves as a vital transportation route, facilitating the movement of goods and people across the country. The expressway is known for its scenic views, passing through beautiful landscapes and mountainous regions. Opened in 2001, the Seohaean Expressway is part of the larger National Route 1 system. It features multiple lanes, rest areas, and toll booths, ensuring efficient travel. The expressway plays a crucial role in enhancing economic activities and reducing travel time between major urban centers in South Korea.