What must a driver do upon seeing an advisory speed sign applicable to their train?

When a driver sees an advisory speed sign applicable to their train, it is crucial for them to regulate their speed so that it does not exceed the advisory speed indicated on the sign. Advisory speed signs are designed to inform drivers of recommended speeds for safe passage through specific areas, such as curves, work zones, or areas with potential hazards.

Adhering to the advisory speed is important because it contributes to the safe operation of the train and helps prevent accidents. It is important for the driver to understand that these signs are issued for safety reasons and to maintain control over the train under changing conditions. Therefore, regulating speed based on the advisory sign is a fundamental aspect of safe driving practices in rail operations.

Other options may lead to unsafe situations—for instance, ignoring the advisory speed, proceeding at maximum speed, or focusing solely on the next signal could compromise safety and negatively impact the train's handling and the safety of passengers and infrastructure.