Final answer:
If some side doors of the train fail to open, the conductor must allow ample time for customers to detrain and entrain, ensuring their safety and convenience.
Step-by-step explanation:
If for any reason, some side doors of the train fail to open, the conductor must allow ample time for customers to detrain and entrain. This is to ensure the safety and convenience of the passengers.
When the side doors of a train fail to open, it may cause delays and confusion among the passengers. The conductor must communicate with the passengers, informing them of the situation and providing guidance on how to proceed.
During this time, the conductor may need to assist passengers in using the other available doors or finding alternative transportation options. It is important for the conductor to be patient and helpful to ensure a smooth transition for the passengers.