David,

Flying J Truck Stops (Travel Centers) are mainly in the Western U. S. However, they have expanded greatly Eastward over the past 5 years. As an 18-wheel truck driver, I use them often. Unfortunately, the Union 76 Truckstops are rapidly becoming extinct--another piece of Americana. The Travel Centers of America (TA Truckstops) have purchased most of the Union76's. Another company that is rapidly pushing for the travel business and caters to RVs and trucks is the Pilot Travel Centers. All of the above are pretty much nationwide.

Cecil