automatic block signal

noun

: a railroad signal at the entrance of a block actuated automatically by and governing the movement of trains entering and using the block

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Dictionary Entries Near automatic block signal

automatic

automatic block signal

automatic coverage

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“Automatic block signal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/automatic%20block%20signal. Accessed 3 Dec. 2023.

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