What is one major stipulation to follow when operating near a Stop Signal?

When operating near a Stop Signal, one major stipulation is that inspections are mandatory for any conflicting routes. This ensures that the safety of the train and its operations is maintained. By requiring inspections, operators can confirm that no conflicting movements or conditions exist that could pose a danger. This protocol emphasizes safety by allowing for a thorough evaluation of the operational environment before proceeding, which is crucial when a Stop Signal is present, indicating that the train must halt to prevent accidents. Adhering to this stipulation helps to manage risks and protect personnel and equipment on the track.

The other options do not align with safety protocols and operating rules that govern train operations near signals. For instance, passing without checking switches or proceeding with authorized movement without required approval undermines safety measures and can lead to potential accidents. Blocking devices are also critical and not considered optional, as they serve as additional safety mechanisms to prevent unauthorized movement.