What does Block Limit refer to?

Block Limit refers to a location where a block limit signal is displayed. In the context of rail operations, block limits are essential for ensuring safe and efficient train movements. A block limit signal indicates the boundaries of a block of track where train movements are controlled. This allows for clear communication about permissible speeds, movements, and stopping points to train operators. Understanding these signals is crucial for maintaining safe distances between trains and preventing accidents.

In this context, the other options do not accurately define Block Limit. Some may involve aspects related to rail operations, but they do not specifically capture the essence of what Block Limit signifies in terms of displayed signals and operational guidelines.