A group of civic and business leaders from Lilburn have begun work to establish Gwinnett County's fourth community improvement district. Community improvement districts, or CIDs, are made up of businesses and property owners who agree to tax themselves to generate money to pay for economic development and transportation related projects. The Lilburn CID would run along Lawrenceville Highway within the city limits, which stretch roughly between Harmony Grove Road and Pleasant Hill Road. If Lilburn is successful with a pending annexation proposal, the eventual CID's boundaries may be extended to Ronald Reagan Parkway, said Norman Nash, who is heading the effort.