On Sat, 11 Jul 2009 09:40:46 -0700 (PDT), Mr Thant
wrote:

TfL call it the "maximum cash fare", and the principle is that there's
a discount from this for using the system correctly (touching in and
out in the specified time, etc). Since the price of a single ticket is
indeed £4, I can't imagine a challenge would be too successful.

Prompted by this I looked up the fare tables and zone maps; travelling
from Canary Wharf to Paddington I could save significantly by avoiding
zone 1. Warwick Avenue (0.8 miles from Paddington) or St John's Wood
(2 miles but on the Jubilee so no change) are in zone 2, but the
journey to either would involve overground. Is there a touch
necessary during transfer to overground? I am guessing TPTB are not
so dim as to assume that alighting in zone 2 means you got there
without passing through the centre, when journeys avoiding zone 1 are
very much the long way round.

Guy
--
http://www.chapmancentral.co.uk