On 12 Jan, 22:26, Paul Corfield wrote:
On Tue, 12 Jan 2010 22:07:46 +0000, Sky Rider
wrote:





Earlier today I did some PAYG experiments. In this post, 'travelling' is
defined as time spent in the 'paid' side of station facilities as well
as the train/tube.

I travelled from Liverpool Street 'NR' to Romford, then 23 minutes later
I travelled back. I wanted to see if I would be charged for two short
journeys or one longer journey, in this case it was the former that
happened (in reality I hit a cap by then but the findings remain valid).

After leaving a bus at Bromley South, I travelled direct to Victoria
'TOCs', spent just over 10 minutes in the concourse then travelled to
Waterloo 'NR 1 - 11' via Clapham Junction. On this occasion, it was
defined as one journey.

Less than 5 minutes later I travelled to Vauxhall 'SWT' then (again
within 5 minutes) took the Victoria line to its station namesake. I
expected my latest originating station would still be Bromley South but
it was now the aforementioned Waterloo variant.

Make of the above what you will, but my main question is this:

If ~5 minutes was seemingly enough for the system to end the ex-Bromley
South journey at Waterloo, why was ~10 minutes not enough to end the
same journey earlier at Victoria?

Put simply the two halves of Victoria NR are different sides of the OSI.
There are logical journeys that can be made by interchanging between the
South Eastern and South Central parts of the station and 10 minutes is
within the interchange time.

Waterloo Main Line is just one side of the multi sided Waterloo OSI. You
re-entered at the same side so therefore a new journey commenced.

Easy really.

I confess I do not understand the issue at Liverpool Street even though
it has different sides to the NR aspect of the station. *I assume you
exited and re-entered on the Great Eastern side of the station?

The 23 minutes was at Romford I assume, from the original message?

Not that that explains it any better.

What is the setup at Romford? Is there an Oystered barrier or some
kind of standalone thing? I am just wondering if it's programmed to
assume a continuing journey that could be via Upminster or something.