A floppy disc containing the completed survey file is then loaded into the train's computer which, through the spread enclosure, will open and close the ballast doors, spreading exact amounts, at precise locations based on the survey. The software also gives the train's exact location and speed, satellite availability, active ballast cars, empty cars and ballast inventory.

Since no ground personnel are required, the "PLUS" train is capable of night and inclement weather spreading assignments. This greatly reduces the potential of injury and exposure to ballast dust. Additional benefits of the "PLUS" system include a reduction in ballast costs and railroad overhead, fewer locomotives, train crews and ballast cars are required, and a reduction in fuel use.