Railway signal

A railway signal is a visual display device that conveys instructions or provides warning of instructions regarding the driver's authority to proceed. 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.

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.
Semaphore signals (Germany)
Colour-light signals
(Great Britain)
Two common types of signal. In both cases, the left signal shows "danger".
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.