What are Interlocking Limits?

Answer: B — The distance between two signal points in an interlocking

Interlocking limits refer specifically to the distance between two signal points within an interlocking setup. This is crucial for railroad operations as it defines the area under the control of the interlocking system, which is designed to safely manage train movements and ensure that signals are displayed correctly according to the position of switches and tracks. Understanding interlocking limits is essential for maintaining safe distances between trains and preventing conflicts in train routing. The other options pertain to different aspects of rail operations; for example, maximum speed refers to limits on train speed, operational limits for track cars involve restrictions on maintenance vehicles, and guidelines for passenger safety deal with protocols designed to protect passengers. None of these definitions capture the specific operational boundary that interlocking limits represent within the signaling framework of railway systems.