Track gauge in South America

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 or "metre gauge", most common for cargo services).