Oklahoma has an extensive turnpike system, maintained by the state government through the Oklahoma Turnpike Authority. All of Oklahoma's turnpikes are controlled-access highways. The majority have at least four lanes, though the Chickasaw Turnpike is two lanes. Tolls on Oklahoma's turnpikes are collected through several methods, particular to each turnpike, involving mainline and sidegate toll plazas. Tolls can be paid through cash (at either unmanned exact-change bays or manned booths, depending on the plaza) or through the Pikepass transponder system.