How often are train inspections required?

Answer: B — Daily, before the train enters service

Train inspections are required daily, before the train enters service, to ensure the safety and reliability of the transportation system. This practice involves checking various components of the train, including brakes, safety equipment, and overall mechanical condition, to identify any potential issues that could compromise safety during operation. Regular inspections are crucial because they help prevent accidents and ensure that trains are fit for passenger travel, addressing any maintenance or repairs before the train is deployed. This frequency of inspection is in line with safety regulations and industry standards designed to protect both passengers and crew. In contrast, other options suggest less frequent inspections, which would not provide the same level of assurance regarding safety and readiness before the trains commence their daily operations.