Power-operated

Constructional features of the railbus include the use of rubber suspension for axlebox/underframe and underframe/body mountings, the use of B.U.T. power transmission equipment, many components of which are interchangeable with those on British Railways standard railcars, power-operated sliding doors, and an absence of normal sidebuffers or drawgear.

The colour-light signals and power-operated points at Waterloo are controlled from one cabin which houses three lever frames with a total of 272 working miniature levers.