Final answer:
The time requirement for the train to have the identification equipment properly displayed is not specified, so it is best to consult the specific regulations and policies of the train or transportation company.
Step-by-step explanation:
The question is asking about how many minutes before the scheduled leaving time the train must have all the identification equipment properly displayed and in place. This question is about the regulations and requirements for train travel. According to the provided information, it is not specified how many minutes before the scheduled leaving time the identification equipment must be in place. Therefore, it is best to consult the specific regulations and policies of the train or transportation company to determine the exact time requirement.