RIP track

However, mechanical defects often do not show up, or are not discovered, until after a freight car has been loaded and is in transit.

Often the repairs required are of a minor nature and such as may be taken care of in a short time with the proper facilities without unloading a car.

[4] As is well understood in railroading, loaded freight cars requiring repair before they can safely continue to destination, are removed from the train and delivered to the incoming side of a rip track which area is commonly referred to as the "bad order" area.

[4] Switcher locomotives are used for delivering defective loaded cars to the RIP track and for removing them after they are repaired.

In the film the protagonists and their locomotive use a RIP track to avoid a head-on collision with 777, the film's runaway locomotive, after being unable to fit into an earlier siding due to the length of their train.