In article ,
(Stephen Firth) wrote:

NM wrote:

D/D tend to be used in cities

Unfortunately this is not true. Stagecoach tend to use DD buses for
rural routes.

And for busier urban routes. In Cambridge, first Park and Ride and then
the Citi 1 had single deckers replaced by double deckers for capacity
reasons. Capacity issues tend to be why rural routes use double deckers.
At peak times a single decker isn't enough.

--
Colin Rosenstiel