Inside, Outside, Near Lane, Far Lane, whatever...

[Carol]

Geoff wrote:
> > As an example, whenever I go into Wales to visit a friend, I
approach a roundabout near the centre of Cardiff to turn left towards
the town of Penarth and there is sign saying "Inside Lane for Penarth
only" because I cannot use the left lane to go straight ahead which
happens usually because there is a dedicated lane for Penarth and - I
repeat - it says "Inside Lane".
> >
Annemehr: 
> And I would SO have been in the wrong lane, had I been on the same 
route.

Carol responds:

Me, too! So, normally, the left lane would be the "dedicated lane"
(the exit lane), but in this case, it's the right lane because--? Or,
if the left lane is always the inside lane, why is this "dedicated
lane" different from the usual setup?

And, erm, "sandwich" in the previous post? Was it roast beef or PB and J?

Carol, empathizing with poor little Rupert Grint in "driving Lessons"