Heartland Express, Inc. (Heartland) is a holding company. The Company is a short-to-medium haul truckload carrier. The Company provides truckload services across the United States (U.S.) and parts of Canada. These truckload services are primarily asset-based transportation services in the dry van truckload market, and it also offer truckload temperature-controlled transportation services to select dedicated customers. Its primary customers include retailers and manufacturers. The Company's over-the-road tractors are equipped with mobile communication systems. The Company operates approximately 26 terminal facilities throughout the United States in addition to its terminal and corporate headquarters in North Liberty, Iowa. Its subsidiaries include Heartland Express, Inc. of Iowa, Heartland Express Services, Inc., Heartland Express Maintenance Services, Inc., Midwest Holding Group, LLC and Millis Transfer, LLC.