The Line 1 of the subway built in Porto Alegre was started in 1980, linking the center of Porto Alegre to cities to the north of the metropolitan area, as Canoas, Esteio, Sapucaia do Sul, São Leopoldo and Novo Hamburgo.
Jalur bawah tanah 1 yang dibangun di Porto Alegre mulai dibanun tahun 1980, menghubungkan pusat kota Porto Alegre menuju kota-kota di bagian utara wilayah metropolitan, seperti Canoas, Esteio, Sapucaia do Sul, São Leopoldo dan Novo Hamburgo.