What is the significance of a 'limit of movement' in NORAC 100?

• A. It defines the geographic boundary where a specific authority or signal applies.
• B. It indicates the maximum speed allowed on the track.
• C. It marks the distance to the next signal.
• D. It designates the boundaries of a yard.

Answer: (A)

The limit of movement marks the geographic boundary where a specific signal or authority is in effect. Inside this limit, the signal’s guidance and the associated protection rules apply to your movement. Outside it, a different set of rules or a different authority governs, so you must follow the appropriate signals and instructions for that area. This concept is essential for coordinating how trains are governed as they move from one controlled segment to another.

So the correct idea is that the limit of movement defines where a particular authority or signal applies. The other ideas—speed, distance to the next signal, or yard boundaries—refer to different concepts and aren’t what the limit of movement signifies.