Translations:How to operate relay line block equipment/15/en
ATTENTION: If a main signal in the direction of the neighbouring signal box cannot be set to clear, the auxiliary button for the starter field (dPo) must be used! This is important when running on a replacement signal (Sz) or written order. The operation of dPo will activate the line repetition interlock (Pwl) and will then allow you to operate the starter field (Po), even though your exit signal for this train has not shown a clear position before. Now that the train is on its way to our neighbour, we wait for the operation of their end field and thus to give the "line clear" signal. This unblocks our starter field (Po) and the line is cleared again to be used by the another train. Train running from the neighbouring signal box to our signal box