In message of Tue, 22
Jul 2008 22:03:36 in uk.transport.london, Tim Woodall
writes
On Tue, 22 Jul 2008 11:52:34 +0100,
Walter Briscoe wrote:

The (undocumented) 15 minute period is that you are charged for an in
zone journey if you enter and leave a station in 15 minutes.
If you enter and leave a station in longer than 15 minutes, you are
charged for an unfinished journey and an unstarted journey.

It's definitely longer (at least it was) at Watford Junction. I've been
there when there's been a "one under" at Harrow and Wealdstone, gone
home after half an hour and "only" been charged 1GBP.

It used to be two hours at Moorgate. I don't care what the charging
regime is, but find it outrageous to the extent that it is undocumented.

When I queried the double charge, I quoted an interval of more than an
hour from my Oyster record. So I can now enter at Moorgate, go twice
round the Circle and get off at Liverpool Street for a zone 1 fare
(assuming a circuit takes just under an hour.) If I make one circuit
from Moorgate to Moorgate, I will be charged a double maximum fare.
--
Walter Briscoe