What is the fine-grained topic of the following text: WMATA’s Rail Mileage Based Asset Management Project is a comprehensive approach to improving and ensuring the reliability of their rail car fleet that includes the accurate capture of rail car mileage, improvements in the management of rail car asset and component configurations, moving the preventive maintenance program from time-based intervals to mileage-based operations. Only return the topic.
WMATA’s Rail Mileage Based Asset Management Project