… Railway or tramway track fixtures and fittings; mechanical (including electro-mechanical) signalling, safety or traffic …
Explanatory notes
… be rotated on the turntable and driven off in a new direction. The heading also includes hand‑operated … etc., is operated from a control point, generally at some distance, by the movement of levers, cranks, rods, wires, … set in a conflicting manner. (2) Signal arms, signal discs, complete signal posts or signal gantries . (3) …