Abstract: A rotational shift control for a vehicle transmission includes a control shaft adapted for being operably coupled to the transmission, an interlock member moveable supported adjacent the control shaft and a clutch pedal operably coupled to the interlock member. The control shaft includes a non-cylindrical outer circumferential surface and is rotatable about an axis between a neutral position and a geared position. The interlock member is moveable in a direction along the axis and includes a locking surface opposite the non-cylindrical outer circumferential surface. The interlock member moves between a first engaged position in which the locking surface engages the control shaft to prevent rotation of the shaft and a second disengaged position in which the locking surface disengages the control shaft to enable rotation of the shaft between the neutral position and the geared position.