E-ZPass Interagency Group is an electronic toll collection system used on toll roads, toll bridges, and toll tunnels in the eastern half of the United States. The group itself is composed of several states' member agencies, which share the same technology and allow travelers to use the same transponder on toll facilities throughout the network. It was created in 1987, since which time several states' compatible systems have rebranded to E-ZPass. Negotiations for nationwide interoperability are ongoing.