What is allowed when establishing working limits on DTC or TWC territory?

When establishing working limits on Direct Traffic Control (DTC) or Track Warrant Control (TWC) territory, it is essential to maintain safety and operational efficiency. In this context, the correct choice emphasizes that working limits must not exceed one block in advance of the train. This is crucial because it ensures that the area ahead of the train is adequately protected and that no unexpected movements can interfere with the workers or equipment in that zone. It allows for a focus on safety by limiting the potential for conflicts and ensuring that the train crew is aware of their immediate surroundings.

This policy is fundamental in preventing accidents and ensuring that the operational integrity of the railroad is maintained. It aligns with the overall safety principles of the GCOR, which prioritize keeping work zones organized and clearly defined. Establishing working limits too far in advance could lead to confusion or unintentional violations of safety protocols, making it critical to adhere strictly to the defined limit of one block.