Two main highways run from Banda Aceh to the south. One runs down the eastern side of the province through main towns such as Bireuen and Lhokseumawe to Medan, the large capital of the province of North Sumatra. The other highway runs down the western side of the province, through lesser-populated areas, to the towns of Calang, Meulaboh, and Singkil. The main bus station, Terminal Terpadu Batoh, is located at Jalan Mr. Teuku Muhammad Hasan. Banda Aceh-Sigli Toll Road, part of Trans-Sumatra Toll Road, is currently under construction; it is located at the tip of the toll road and connected with Sultan Iskandar Muda Airport.