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→Method of Operation: typo
The signalman sending a train will alert the receiving signalman with the "Call Attention" bell signal, and when he or she responds will, by bell signal, ask "Is the line clear for [this kind of train]", there being different signals for different train types. If the receiving signalman accepts the train, he or she will repeat the signal back, and will reverse the Acceptance Lever. An indication is given in the other signalbox to indicate that this has been done.
When the train arrives at the second signal box, the signalman will return the Acceptance Lever to the normal position once the train has passed his signal protecting entry to the section in the opposite direction, and send the "Train Out Of Section" bell signal to the sending signalbox. Unlike Electric Train Token working, there is usually no requirement to see the tail lamp before doing this, as the track circuits prove to the signalman that no part of the train has been left behind in the section (although for certain types of non-passenger trains, where the risk of the track circuits falsely showing "Clear" is judged to be higher, the requirement to observe tail lamps is still in place).
==See Also==
*[[Absolute Block]]
*[[Single line working using tokens]]
