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Thesaurus: block signal
One of the danger signals or safety signals which guide the movement of trains in a block system. The signal is often so coupled with a switch that act of opening or closing the switch operates the signal also.
Related headwords
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Definitions
- One of the danger signals or safety signals which guide the movement of trains in a block system. The signal is often so coupled with a switch that act of opening or closing the switch operates the signal also.
- One of the danger signals or safety signals which guide themovement of trains in a block system. The signal is often so coupledwith a switch that act of opening or closing the switch operates thesignal also.