P-20 radar, NATO reporting name "Token" Token (cryptocurrency), certain types of cryptocurrency Token (railwaysignalling), a physical object given to a
Radio Electronic Token Block is a system of railwaysignalling used in the United Kingdom. It is a development of the physical token system for controlling
Railwaysignalling (BE), or railroad signaling (AE), is a system used to control the movement of railway traffic. Trains move on fixed rails, making them
Signalling block systems enable the safe and efficient operation of railways by preventing collisions between trains. The basic principle is that a track