In Absolute BlockA system of controlling rail traffic, where (under normal operations) only one train is allowed in the Block Section at a time. Proof of a section clear normall... More, it prevents the SignallerA person responsible for the operation of the Signalling System, to safely control the passage and regulation of trains, usually located in a Signal Box. More from accepting a second train
without the first having occupied and cleared the Home SignalIn Block Signalling, it is the first Stop Signal on the Approach To and worked from a Signal Box and controls the exit from the Block Section. (If no Starting S... More BerthA location where a Train Description may be displayed by the Train Describer and which is normally associated with a Signal. More Track
Circuit. See also Home Normal ControlThe Home Signal lever is proved Normal (and Semaphore Signal arm On where repeated) before the Signaller can give Line Clear to the Signal Box in rear. This pre... More and InterlinkingBox-to-box controls to ensure enforcement of electrical Sequential Locking. Proving of Home and Distant On and Berth Clear before transmitting Line Clear and th... More.