are its frontage roads; most freeways have continuous frontage roads, one-way in urban areas and two-way in rural areas. Several toll roads have one-way frontage roads—not necessarily continuous—with state highway numbers. Most toll roads are marked with special logos, but TxDOT has adopted a new marker as of 2006 for numbered toll roads. War Highways War Highways were designated from 1942-1943. All were cancelled or redesignated by 1947. See also List of Dallas-Fort Worth area freeways List of Houston highways List of highways in San Antonio, Texas References External links Texas Department of Transportation, Highway Designation Files Texas County Highway Maps AARoads Texas Highway Page TexasFreeway.com fan site Highways