Heartland Express, Inc. is a holding company. The Company, together with its subsidiaries, is a short, medium and long-haul truckload carrier and transportation services provider. It primarily provides a nationwide asset-based dry van truckload service for various shippers across the United States, along with cross-border freight and other transportation services offered through third-party partnerships in Mexico. The Company’s primary customers include retailers, manufacturers and parcel carriers. Its over-the-road tractors are equipped with mobile communication systems. It operates 28 terminal facilities throughout the contiguous United States and one in Mexico. The Company’s subsidiaries include Heartland Express, Inc. of Iowa, Heartland Express Services, Inc., Heartland Express Maintenance Services, Inc., Midwest Holding Group, LLC, Millis Transfer, LLC, Smith Transport, Inc., Transportation Resources, Inc., Contract Freighters, Inc., and others.