Interlocking Limits are defined as what?

Interlocking Limits are defined as what?

• A. The distance a train may approach an interlocking
• B. The tracks between outer opposing signals that protect the interlocking.
• C. The length of the interlocking area
• D. The maximum permitted speed in the interlocking zone

Answer: (B)

Interlocking limits are the boundary of protection provided by the interlocking, defined by the tracks between the two outer opposing signals that guard the interlocking. Within this area, signals and route-setting devices are interlocked to prevent conflicting movements, ensuring safe routing through the interlocking. That boundary is what the term refers to. So the tracks between the outer opposing signals that protect the interlocking best capture what interlocking limits are. The other ideas describe different concepts—how close a train may approach the interlocking, the overall length of the interlocking area, or the speed permitted within the zone—but they do not define the protective boundary itself.

Interlocking limits are the boundary of protection provided by the interlocking, defined by the tracks between the two outer opposing signals that guard the interlocking. Within this area, signals and route-setting devices are interlocked to prevent conflicting movements, ensuring safe routing through the interlocking. That boundary is what the term refers to.

So the tracks between the outer opposing signals that protect the interlocking best capture what interlocking limits are. The other ideas describe different concepts—how close a train may approach the interlocking, the overall length of the interlocking area, or the speed permitted within the zone—but they do not define the protective boundary itself.