partly, confusion is because the region maintains the historic nomenclature of each county naming its roads for the towns they connect with in surrounding counties. thus, from dallas to roswell, georgia 120 is marietta highway to the paulding/cobb county line, is dallas highway to the city of marietta, whitlock avenue to the town square, south park square for just one city block, roswell street to cobb parkway (at the big chicken), roswell road to the cobb/fulton county line, and finally marietta street to the town square in roswell. further confusion is from the arbitrary location of state routes by the georgia department of transportation (gdot), so that they travel an erratic path requiring several turns by drivers instead of traveling the original straight route; and the renaming of roads by state legislators to honor their friends.