It is usually engraved with the two stations it is valid between and shaped differently to prevent confusion with adjacent segment's tokens. Besides, it is in t

It is usually engraved with the two stations it is valid between and shaped differently to prevent confusion with adjacent segment's tokens. Besides, it is in the train crew's own interests to be holding the one true token, lest they be the ones unauthorized to be on the single track line and therefore the cause of an accident... https://en.m.wikipedia.org/wiki/Token_(railway_signalling) https://en.m.wikipedia.org/wiki/Token_(railway_signalling)