What is a signaling block and its purpose?

• A. A defined section of track between two signals where only one train is permitted at a time to maintain safe separation.
• B. A signal located at the end of a block to indicate speed.
• C. A power section where signals are powered.
• D. An area designated for maintenance crews.

Answer: (C)

A signaling block is a defined stretch of track bounded by signals at each end, within which only one train may be present at a time. This setup creates a safe, controlled section of track so trains can be spaced apart reliably and the system can know when the block is clear and ready for the next train. Occupancy detection and signal control ensure a train cannot enter a block until the previous train has left it, enabling orderly sequencing, safe separation, and automatic protection.

Other options don’t fit because a block is not about a speed-indicating signal at the end of the block, nor is it a power section that merely supplies signals, and it isn’t a maintenance area.