The group's principal activity is to provide rail transportation services. The group owns and operates rail network comprised of approximately 6,000 miles of main and branch lines that link key commercial and industrial markets in the United States and Mexico. The group offers services to a wide range of industries including the chemical and petroleum, paper and forest, agricultural and mineral, intermodal and automotive and coals. The group's expanded rail network interconnects with all other class i railroads and provides customers with an effective alternative to other railroad routes, giving direct access to Mexico and the southeastern and southwestern United States.