Final answer:
The operator of a train is required to slow down and proceed with caution when passing yellow caution lanterns. This is similar to road safety where vehicles must respect traffic signals to ensure the safety of all road users.
Step-by-step explanation:
In response to the student's question about what an operator of a train is required to do when passing yellow caution lanterns, the operator must slow down and proceed with caution. This is analogous to how traffic lights work to ensure safety on the roads. For instance, when approaching a traffic signal, vehicles must slow down; they cannot simply speed through without regard to the signal. This is designed to promote the safety of all road users.
In emergency situations, such as when transporting a pregnant woman to the hospital at a late hour, some might argue that breaking a traffic rule could be more beneficial than strictly following it. However, train operators must adhere to their specific rules for safety regardless of the situation. Taking these examples together highlights the importance of following safety protocols, whether on the road or on the railway.