From reader DK:
Jay Walder is thinking about switching the New York City MTA's approach to subway repairs. They would go to full closure to repair and reconstruct rather than trying to keep the line open during construction, apparently drawing from Walder's London experience, the Daily News reports
In my view, London doesn't do this enough. This saves money, and in the long run may even save user time. (Big delay for short time may or may not be less than a short delay for long time, it just depends). There needs to be some planning for travelers who would switch to alternatives. Further it avoids all the construction set up and take down time resulting from trying to do work only at night.