ghost train

Short definition from Wiktionary

Noun

1. 1
   A fairground attraction in which participants ride through a haunted house in a railcar.
2. 2
   A ghost-themed excursion offered by many tourist railways around the world. Usually, a fictional story is created and performed with static displays or live actors on either side of a train. Actors and actresses play out a story on the long and narrow stage provided by the railcar aisles.
3. 3
   A rail service which does not appear in the public timetables.
4. 4
   A supernatural manifestation of a railway locomotive or passenger cars.
5. 5
   An unmanned train rolling on the train line.
6. 6
   A train service that no longer exists, having stopped running.