A Caboose may be played on any train, but then no further cars may be added. A Caboose protects against “Steal” and “Broken Car” Disasters, but if it is played on a passenger train, that train gets no bonuses.

Two identical cars and a Caboose make a legal train, worth the value of the car that began the train. Otherwise, a Caboose is worth 1 point.