NATSO: Advancing the Success of Truckstop and Travel Plaza Members Headquartered just outside Washington, D.C., NATSO is a national trade association representing travel plaza and truckstop owners and operators. NATSO represents over 1,350 travel plazas and truckstops nationwide, owned by more than 200 corporate entities, and pursues a clear mission: to advance the success of truckstop and travel plaza members. Since 1960, NATSO has dedicated itself to the needs of truckstops, travel plazas and their suppliers by serving as America's official source of information on the diverse industry. NATSO also acts as the voice of the industry on Capitol Hill and at regulatory agencies such as the Environmental Protection Agency, the Department of Transportation, the Department of Labor and the Department of Energy. In addition, NATSO conducts the industry's only national convention and exposition. The NATSO Foundation is the research, education and public outreach arm of the travel plaza and truckstop industry. The power of association is a tremendous force in our personal and professional lives.