On Sep 28, 5:30*am, D7666 wrote:
On Sep 28, 2:52*am, Basil Jet wrote:

Underground lines by their geographic direction;

First, try defining up/down on the Circle Line.

Try defining north/south/east/west on the Circle Line. ;-)

We don't for internal use.

We use 'inner' and 'outer'

When you do track acusotmoised etc courses they tell you 2 acronyms
WIND and OUSE where rule specifics apply to one direction or the
other.

WIND = westbound inner northbound down

OUSE = outer up southbound eastbound

None of this helps customers of course.

Out if idle curiosity, at what point on the Heathrow loop does
westbound become eastbound? Was there a change with the opening of
terminal 5? Also, is the direction maintained for the length of a
whole line, or do they change with geography? On the Jubilee line,
for example, from a compass perspective, what is northbound in the
east is southbound in the west for the same "logical" direction.

Robin