What term refers to a block established between block stations, block limit stations, interlockings or any combination thereof which must not be occupied by more than one train except as provided by the rules?

• A. Block
• B. Absolute Block
• C. Block Signal System
• D. Manual Block Signal System

Answer: (B)

In railroad signaling, the idea being tested is that an Absolute Block is a section of track between block signals or limits that must not be occupied by more than one train at a time, except as rules allow. This setup—established between block stations, block limit stations, interlockings, or any combination—ensures that only one train can be in that block, preventing head-on conflicts and maintaining safe separation. The phrase in the question precisely describes that strict one-train-per-block rule, which is what defines an Absolute Block. The other terms describe types or aspects of blocks or signaling systems but do not inherently enforce the single-train occupancy rule.