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Note about trains not of Classes A, B, or C, or a single light engine
Revering the Acceptance Lever at the receiving end will unlock the signal which allows trains to enter the section of line between the two signalboxes at the sending end. The signalman will clear this signal, which is the only permission that trains need to enter the section. As the train departs, the sending signalman will check it is showing the correct tail lamp at the end of the train, and send the "Train Entering Section" bell signal to the other signalman. During the time that the train is in the section, the signalmen at either end are reminded of its presence by track circuit indications in each signal box, and by either the reversed Acceptance Lever in the receiving signal box or by the associated indication in the sending signal box.
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. There Unlike [[Single line working using tokens]], there is usually no requirement to see the tail lamp before doing this, as is the case with the other methods of working on the SVR, 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).
