I've read lots of articles about mismanagement and unions pushing up costs for work but I wonder how much problem the 24/7 mentality creates? Even in London, th

I've read lots of articles about mismanagement and unions pushing up costs for work but I wonder how much problem the 24/7 mentality creates? Even in London, the Tube is mostly shutdown for around 6 hours per night, not a lot of time but enough to make some fairly big inroads into the maintenance. I found the NYC subway to be fairly decent but I found the feeling of darkness in many stations to be more of a big deal. I wouldn't mind waiting in stations that were much lit much better.