Which term describes a length of track with defined limits on which train movements are governed by signals?

Which term describes a length of track with defined limits on which train movements are governed by signals?

• A. Block
• B. Automatic Block Signal
• C. Cab Signal
• D. Bulletin Order

Answer: (A)

A block. In railroad signaling, the track is divided into sections with defined boundaries, and signals control train movements within each section to ensure safe separation. This length of track governed by signals is called a block. An Automatic Block Signal system is a method used to manage these blocks, but the basic unit described by the question is the block. A cab signal relates to in-cab indications of movement authority, not the track length, and a Bulletin Order is a temporary instruction, not the defined track segment.

A block. In railroad signaling, the track is divided into sections with defined boundaries, and signals control train movements within each section to ensure safe separation. This length of track governed by signals is called a block. An Automatic Block Signal system is a method used to manage these blocks, but the basic unit described by the question is the block. A cab signal relates to in-cab indications of movement authority, not the track length, and a Bulletin Order is a temporary instruction, not the defined track segment.