What is the purpose of train signals?

The purpose of train signals is primarily to communicate operational information to engineers. These signals play a critical role in ensuring the safe and efficient movement of trains along the tracks. They convey important instructions about track conditions, speeds, and potential hazards ahead, allowing engineers to make informed decisions about their operation of the train. This communication is vital for maintaining safety protocols and minimizing the risk of accidents.

The other options do not accurately reflect the function of train signals. They are not meant for entertainment, nor are they primarily designed for training crew members on procedures or for regulating fuel consumption. The primary focus of train signals remains on providing real-time, crucial operational information that directly affects the performance and safety of train operations.