Mid-life Vehicle Rehabilitation Programs involve taking railcars out of service for the overhaul, remanufacturer, or upgrade of a substantial number of vehicle systems and subsystems at once (usually in year 15 of the vehicle in service). The Rail Transit Agency requires a vendor to restore vehicles to “like new” condition and performance and to implement essential technology upgrades. As an industry practice, it recommended best practice, which is to be completed by solicitation by an offsite vendor.

PSR  1441