Railway signal
Visual signal device for railway engineers / From Wikipedia, the free encyclopedia
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Not to be confused with the signals along roadways at level crossings.
This article is about physical railway signal devices. For the principle of railway signalling, see railway signalling.
A railway signal is a visual display device that conveys instructions or provides warning of instructions regarding the driver's authority to proceed.[1] The driver interprets the signal's indication and acts accordingly. Typically, a signal might inform the driver of the speed at which the train may safely proceed or it may instruct the driver to stop.
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