London Underground will also be 24 hours on Friday and Saturday nights only, again due to requirement for maintenance timeslots. More info http://www.tfl.gov.uk

London Underground will also be 24 hours on Friday and Saturday nights only, again due to requirement for maintenance timeslots. More info http://www.tfl.gov.uk/campaign/tube-improvements/the-future-of-the-tube/night-tube http://www.tfl.gov.uk/campaign/tube-improvements/the-future-... Also note that "night service" on NYC subway can sometimes be every 20 or 30 minutes and run alternating on one track