What must cab signal indications be followed by an engineer?

Cab signal indications are crucial for an engineer to maintain safe train operations. These signals provide real-time information regarding speed restrictions and other operational commands that the engineer must adhere to while operating the train. Following cab signal indications, particularly concerning speed changes, is essential for ensuring adherence to safety protocols and for preventing accidents. Engineers are trained to respond promptly to these signals, adjusting their speed accordingly to remain within safe operating limits set by the railway's regulations.

While relaxed operating protocols, freight loading procedures, and training regulations are important aspects of railway operations, they do not directly pertain to the immediate operational adjustments required by cab signal indications. Therefore, the emphasis on speed changes reflects the critical role that these signals play in maintaining the safety and efficiency of train operations.