What is the meaning of a "Restricting" signal in NORAC?

A "Restricting" signal in NORAC indicates that the train must proceed with caution and be prepared to stop for any obstruction. This signal serves as a warning to the crew that conditions may not be safe for normal operations. It suggests that there could be potential hazards or restrictions ahead that require the train to operate at a reduced speed.

This cautious approach allows for greater awareness of the surroundings and prepares the train crew to respond quickly to any unexpected obstructions on the track. By being prepared to stop, the crew can ensure the safety of the train, its passengers, and any other trains or equipment in the vicinity. Other options imply actions that do not align with the intended cautious approach required by a "Restricting" signal, highlighting the importance of understanding each signal's specific directive within the NORAC system.