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What are the features of the driver-operated and driver-less MRT systems and what are the advantages and disadvantages of each system? (E&M Systems)

The driver-operated system indicates that a cabin is provided for the driver, who controls the train automatically and/or manually. The advantage of this system is that the driver is on hand to handle any unexpected occurrences. The higher cost of hiring a driver is a disadvantage. The driverless system runs under full automatic control, reducing labor costs. But a drawback of the system is that without a driver on the train, the remote control center has to take charge of evacuating the carriages or managing other eventualities in emergency situations.