Route 4 is an 18.6-mile (29.9 km) partial ring road located in Charlotte, North Carolina. Beginning and ending at Interstate 85 (I-85), it loops south around Uptown Charlotte along state-maintained secondary roads, connecting the Charlotte Douglas International Airport and several city neighborhoods including Madison Park, Myers Park, Windsor Park and Sugar Creek. The route is posted by the Charlotte Department of Transportation (CDOT), using a modified pentagonal county road shield, with a green background and the city's crown logo above the number.[1][2][3][4] The loop has a radius of about 4 miles (6.4 km), hence the number.[5]
^Staff. "Thoroughfare Planning"(PDF). Charlotte Regional Transportation Planning Organization. Archived from the original(PDF) on October 26, 2007. Retrieved September 5, 2016.
^Whitacre, Dianne (November 21, 1999). "The Original Outerbelt is Friendly, Useful". The Charlotte Observer. p. 5B.