Inventive embodiments are directed to components subassemblies systems and/or methods for infinitely variable transmissions (IVT). In one embodiment a control system is adapted to facilitate a change in operating mode of an IVT. In another embodiment a control system includes a drive clutch coupled to a source of rotational power; the drive clutch is configured to selectively engage a traction ring and a carrier of the IVT. The control system includes a one way clutch assembly configured to selectively engage the traction ring and the carrier. In some embodiments the control system governs the actuation of the one way clutch to selectively lock and unlock components of the IVT. In some embodiments the control system implements an IVT mode wherein the carrier selectively couples to a source of rotational power.
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