What should be done if signal appliances are found to be in poor condition?

When signal appliances are found to be in poor condition, the appropriate action is to report the issue to a supervisor and refrain from using them. This is crucial because using malfunctioning or poorly maintained signal appliances can pose a significant safety risk to both workers and train operations. Ensuring that all equipment is in proper working order is vital for safe railway operations, and reporting issues allows for professional evaluation and necessary repairs before the equipment is put back into service. This process helps maintain safety standards and ensures that all involved are protected from potential hazards associated with faulty equipment.