What should be done for movements on rusty rails or non-shunting tracks?

Establishing an Absolute Block for movements on rusty rails or non-shunting tracks is a crucial safety measure. Rusty rails can lead to poor traction and diminished braking performance, which increases the risk of derailments or accidents. By creating an Absolute Block, it ensures that no other trains can occupy the same track section simultaneously, significantly minimizing the potential for collisions and enhancing overall safety during these precarious conditions. This procedure allows for greater control over train movements, enabling dispatchers and operators to effectively manage the risks associated with operating on compromised infrastructure.

The other options do not align with safety protocols for operating on such tracks. Allowing trains to run at full speed compromises safety due to the unreliability of traction on rusty rails. Permitting multiple trains simultaneously would heighten the risk of accidents, which is precisely what the Absolute Block seeks to prevent. Lastly, while keeping signals cleared is generally important, it does not adequately address the specific hazards associated with movements on rusty rails, where control and limited access are paramount.