Trains use a system of points to move between tracks.
The points are usually fixed at a particular location.
Today’s invention is a set of mobile points which can be moved along a pair of parallel, standard spaced tracks, in order to allow trains to switch direction much more flexibly (so that a change of tracks or direction can be made at short notice, eg in response to an emergency).
This consists of pair of curved rails with a bogie at either end, at least one of which would be powered by a remote controlled electric motor.