Leighton Buzzard’s narrow-gauge railway is warning vandals who try deliberately to derail its trains risk life imprisonment.
The message follows several cases of deliberate damage to track and signalling in the Leedon area.
The most recent was discovered at the start of train services on Sunday.
Railway spokesman, Mervyn Leah, explained: “We are responsible for the safe operation of our railway, to the same Office of the Rail Regulator as the national system, and we are inspected regularly.
“This also means that the legal consequences for people who endanger our safety are the same – and for attempting to cause injury to passengers the maximum penalty is life imprisonment.
“We hope that those who have been causing these problems will find a more constructive pastime, for their own sake.”