The Ferrocarril del Istmo de Tehuantepec, S. A. (FIT) plays a vital role in Mexico's transportation infrastructure, managing three major railway lines totaling nearly 1,000 kilometers.

Established following significant legal reform in the 1990s, the FIT focuses on conservation, maintenance, rehabilitation, and construction of railways to enhance efficiency and safety. The primary routes include the “Z” line from Veracruz to Salina Cruz, the “K” line connecting Oaxaca and Chiapas and proposed links to Guatemala, and the “FA” line traversing Veracruz, Tabasco, and Chiapas. The FIT is committed to transparency and public participation, offering various services and information through its online portal, which includes ticket purchases and reports on performance indicators.

With ongoing projects and improvements, FIT aims to provide seamless connectivity across regions, fostering economic development and accessibility in the country. The firm is dedicated to enhancing the travel experience while ensuring responsible operational practices in the railway sector