In South America, Argentina and Chile use 1,676 mm (5 ft 6 in) track gauge, as well as 1,000 mm (3 ft 3+3⁄8 in) or metre gauge. Brazil uses 1,600 mm (5 ft 3 in) (known as "Irish gauge", most common for passenger services and a few corridors in the Southeast) and 1,000 mm (3 ft 3+3⁄8 in) (known as "narrow gauge" or "metre gauge", most common for cargo services). Exceptions are the Estrada de Ferro do Amapá north of the Amazon River, which has 1,435 mm (4 ft 8+1⁄2 in) gauge, and the Lines 4 and 5 of São Paulo Metro, which also use standard gauge.