"martyn dawe" wrote ..
yes but happens if the bus gets into a bit of a slide or cannot get
traction going round corners, something some of the drivers don't seem
to have mastered in dry weather ?

I've never experienced that, and I was writing on the basis that they'd be
using appropriately trained drivers.
(silly old me, huh?)
--

Andrew

"If A is success in life, then A = x + y + z.
Work is x; y is play; and z is keeping your mouth shut." ~ Albert Einstein