London Banter - View Single Post

Colin Rosenstiel · November 12th 05, 11:16 AM posted to uk.transport.london

In article ,
(Paul Corfield) wrote:

On Sat, 12 Nov 2005 01:14 +0000 (GMT Standard Time),
(Colin Rosenstiel) wrote:

That NR and LUL validity are handled separately I can understand but
not realising where the ticket is actually valid to is harder to
cope with. If it's a ticket to an LUL destination surely it's not
that hard to work out it's done it job on exiting at LUL?

The LU gate does NOT read the NR bit. It just knows from the ticket
type that it has some validity on NR somewhere. That may or may have
been
used, it may or may not start at the station where you exit LU or you
may need to walk down the street to a NR Station as at East Putney /
Putney. As the gate cannot know if you still need to use the NR
portion it has to default to giving you the ticket back. It reads the LU
bit which on your ticket would be a trip in Z12. The gate will read an
entry point into LU within those zones and then check to see if where
you
are exiting is also in Z12. If it is then the LU bit is used up, the
gate
opens, gives you your ticket back and off you go.

So it doesn't even know where the NR bit is, e.g. whether it logically
comes before or after the LU journey? Or where the LU & ticket
destinations are? How strange.

--
Colin Rosenstiel