Block Signal - Law Dictionary Search Results
Home Dictionary Name: block signalBlock 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...
Block system
A system by which the track is divided into short sections as of three or four miles and trains are so run by the guidance of electric or combined electric and pneumatic signals that no train enters a section or block until the preceding train has left it as in absolute blocking or that a train may be allowed to follow another into a block as long as it proceeds with excessive caution as in permissive blocking...
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