own highway system, usually of beltways. The city of Pittsburgh, Pennsylvania, for instance, has a colored belt system. Officials in Charlotte, North Carolina, created Charlotte Route 4, a loop of surface streets around Uptown Charlotte. A route in Pawtucket, Rhode Island known as the Downtown Circulator, was created by the city to help travelers navigate the downtown area. See also Alternate route Bypass Special route List of business routes of the Interstate Highway System List of special routes of the United States Numbered Highway System References Roads in the United States Types of roads Roads in Canada by type