Nope. It's a tapered square. One of the few driver bits where you can put a screw on the end of drill, then hang/swing the drill from the screw alone. A slotted driver will not work, at all.
(I'm Canadian. Robertson is the most common driver type here, except for imported products.)
First I heard of them. Looks like that, in a pinch, a flat-head driver could turn it ...