In message , at
00:23:00 on Thu, 16 May 2013, Jon P
remarked:
I think they use a different phrase now but it used to amuse me that in the weekly Weekend Engineering Work e-mail TfL line closures were
always described as 'while we improve xxx' while NR closures were described just as 'maintenance work'

The numerous weekend bustitutions currently being suffered in the Ely
area are described by NR as arising from "route improvement" work.
--
Roland Perry