ShutInSidingKeyReleaseInstrument
Key release instrument specific to shunting sidings on open line.
It isolates (en-UK: <i>shuts in</i>) the shunting yard from the main running line.
ShutInSidingKeyReleaseInstrument
Key release instrument specific to shunting sidings on open line.
It isolates (en-UK: <i>shuts in</i>) the shunting yard from the main running line.
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Key release instrument specifi ...... rd from the main running line.