Under NORAC rules, what is required when entering a tunnel?

When entering a tunnel under NORAC rules, it is required to reduce speed and ensure communication is clear. This is important for several reasons.

Tunnels can create a confined environment where visibility might be limited, and any unforeseen circumstances—such as obstacles or equipment failures—could pose safety risks. By reducing speed, train crews can maintain better control and respond more effectively to any potential issues that might arise.

Clear communication is essential as well, particularly if multiple trains are operating in the vicinity of the tunnel. It allows for coordination between crews, ensuring that all parties are aware of the train's location and intentions, thereby enhancing safety and operational efficiency.

Speeding up or proceeding at normal speed could lead to dangerous situations, especially if visibility is compromised or if there is an urgent need to stop. Thus, the emphasis on reducing speed while ensuring communication adds an additional layer of safety critical for navigating tunnels.