In message , at 13:08:46 on Tue, 26 Nov
2019, Basil Jet remarked:

How much 'practice' do you think you'll need to drive a ~600 tonne
object which takes over a mile to stop, at up to 125mph in 50 yard
visibility fog, without losing time, over 700 miles of route?

Surely the Aberdeen-Penzance train doesn't have a single driver for the
13 hour journey.

The reason so many trains stop a places like York and Preston isn't
because they are especially big important places, but they are halfway
to Scotland, and they can swap drivers.

No doubt the sleepers swap at Edinburgh/Glasgow too.
--
Roland Perry