The Ferrocarril Roca is a major railway line in Argentina, primarily serving the Greater Buenos Aires area. It connects the city of Buenos Aires with various suburban regions, facilitating daily commutes for thousands of passengers. The line is named after Domingo Faustino Sarmiento, an influential Argentine educator and politician who promoted railway development in the country. Operated by Trenes Argentinos, the Ferrocarril Roca features several routes and stations, making it an essential part of the public transportation system. The trains are known for their affordability and frequency, helping to reduce traffic congestion in the metropolitan area.