What are the X marks or concentric circles painted on the ends of some coaches?
A large yellow ‘X’, or a series of concentric circles (yellow or white) are painted on the end of a coach which is used as the last coach in a rake — it allows station crew or signalmen to visually check that the rake is intact by sighting this last vehicle indication. At night, a small red lamp is used at the end (this used to be an oil lamp in days past), and sometimes a board with the words ‘Last Vehicle’ can also be spotted.