Abstract: Apparatus for interlocking independent control handles for throttle, dynamic brake and reverser, within a control stand for a railway transit vehicle including:a first cam disk perpendicularly mounted to the throttle handle axle for rotation therewith, the periphery of which is defined by at least a partial cylindrical first surface radially spaced from the first axle, and a partial concave second surface adjacent to the partial cylindrical first surface,a second cam disk of substantially similar configuration perpendicularly mounted to the dynamic brake handle axle for rotation therewith,the first and second cam disks being disposed in a common plane and directly adjacent to one another such that the concave second surfaces of each cam disk are directly opposed one another, so that only one of the throttle or dynamic brake handles can be pivoted at any given time by virtue of the first cylindrical surface on the associated cam disk moving into engagement with the opposed concave second surface of the adjacen