The Georgia Department of Transportation is updating the state’s long-range rail plan, which affects Hall County, with its heavy freight traffic, Amtrak passenger service and proposed commuter and passenger rail lines. The tracks running through Hall make up Norfolk Southern’s main line between Atlanta and cities north, such as Charlotte, N.C., and Richmond, Va., said Tim Evans, the Greater Hall Chamber of Commerce’s vice president of economic development. “It’s a major transportation corridor,” he said.