Navigation System 123
Coverage Areas
South Carolina
Augusta-Aiken
Beaufort
Charleston
Charlotte
Columbia
Greenville/Spartanburg – including
additional cities in Greenville and
Spartanburg Counties
Myrtle Beach Metro
Rock Hill Metro
South Dakota
Sioux Falls
Tennessee
Chattanooga
Johnson City/Kingsport/Bristol
Knoxville/Farragut Metro
Memphis Metro – including Desoto
and Tunica Counties
Nashville
Texas
Austin Metro
Big Bend
Bryan/College Station
Corpus Christi
Dallas/Fort Worth Metro-Sherman –
including additional cities in Grayson
County
El Paso
Houston Metro – including additional
cities in Galveston County
Longview
Lubbock
Midland/Odessa Metro
San Antonio Metro
South Padre Island
Utah
Moab
Ogden
Park City
Salt Lake City Metro
Salt Lake City -Provo
Vermont
Burlington
Montpelier
The State of Vermont: Most roads are
verified in non-metro areas.
Virginia
Washington D.C. detailed area –
including Alexandria, Arlington,
Fairfax, Falls Church, Fauquier
County, Fredericksburg City,
Manassas, and additional cities in
Charlottesville-U of VA
Danville
Loudoun and Prince William
Counties
Johnson City-Kingsport Bristol
Lynchburg
Richmond Metro
Roanoke
Shenandoah National Park
Williamsburg/Norfolk/Virginia
Beach Metro – including Charles
City, Hopewell, Kent, and Prince
George Counties
Winchester
Washington
Bellingham
Portland-Salem
Seattle/Tacoma/Olympia Metro –
including Island County
Spokane-Coeur d’Alene
Tri-Cities
Whatcom
Point Roberts (community)
Yakima
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