Final answer:
The best procedure for operating a passenger train past successive grade time signals involves following the signals and being alert for any changes, to ensure safety and efficiency. The options provided in the question do not apply to actual train operations.
Step-by-step explanation:
The BEST procedure for operating a passenger train past a number of successive grade time signals is not explicitly stated in the options provided in the question. However, in the context of real-world operations, the correct procedure would typically be to follow the signals, adjusting the train's speed accordingly, and to remain alert for any changes in the signal status. Train operators must be trained to understand and react to signals to ensure the safety and punctuality of the train service.
Regular passengers of a train service may become attuned to the train's schedule and crowd movements to such an extent that they can sense delays or track changes without consulting the schedule board. Nevertheless, the role of the train operator is crucial in adhering to the signals to maintain efficiency and safety within the railroad network.
In summary, while the options provided in the question are not relevant to train operations, the critical aspect is to follow the established protocols for grade time signals which emphasize safety and the smooth running of the service.