Chris Green on Saturday last was suggesting some "out of the box" thinking - comparisons to the Japanese model, for example
I wouldn't normally associate "out of the box thinking" with the Japanese

The infamous "pushers" in Tokyo to squeeze more commuters on trains might be a relevant but unwelcome example of original Japanese thinking. Or the fatal crash where the driver was speeding because he was on a final warning for late running.
I've never found the Japanese Railways particularly innovative. Clean, efficient, fast and reliable - yes! But the infrastructure is not that much different to our own. Stations, tracks, crossings, points, bogies - all instantly recognisable.
Could you elaborate on what Chris Green meant by the Japanese model, Grahame? How do they solve their maintenance problems without disrupting their business, leisure and freight customers?