On Wed, 19 Jan 2011 21:24:55 +0000, Paul Corfield wrote:

On Tue, 18 Jan 2011 22:37:49 +0000, Colum Mylod
wrote:

I topped up £10 to have £14 on my card by 1 Jan. So far so good. Journey
on Monday White City to LCY shows some oddities. The DLR touch-out
claimed a total fare of £2.50 to leave £10.20 balance, which means I
dropped £3.80. The DLR pad seems to speak a contradicting story -
Oystercard journey history is:

Date Time Station +/- Balance -----
----- ------- ---- ------- 17/01/11
06:36 London City Airport Exit £1.90 £10.20
05:17 White City Entry -£4.40 £8.30
19/12/10 09:40 Heathrow Top-up £10.00 £14.00

1hr19min can't be the reason for a Z123 journey can it? There are indeed
no trips on this card between 19 Dec and 17 Jan (other train tickets
were used instead).

You are well within the max journey time of 110 minutes for z123 trip so
I don't see that as the issue.

Given that the £1.30 was already missing when he _started_ the trip,
there's no way the length of the trip could possibly be the issue.


I am puzzled by the max fare deduction of £4.40. Having looked at some
info I think this should actually be £4.30 if you were on the TfL
farescale.

I'm also puzzled by the deduction of £4.40, but like I said in the other
post, I'm puzzled as to how it could leave £8.30 instead of £9.60

That's the real mystery here, and all this business of journey times and
fare scales is just a red herring.


The £2.50 fare is correct. Quite where the £1.30 has gone is anyone's
guess. Looking at the fare lists then a single zone or two zone (not Z1)
journey off peak on the TfL tariff is £1.30 which is a tad suspicious.

It's also the cost of a bus fare, which might be even more suspicious,
since AIUI bus journeys don't show up on the online journey history until
after they've been uploaded from the bus.

The simplest, most boring explanation is that the OP made a bus journey
which he forgot about, and that hadn't yet shown up on the online history
when he checked it.


I assume you went White City - central line - Bank - dlr - London City
Airport? No intermediate validations? No OSIs? No strange interchange
route at Bank Station?

If you could confirm the route you took then it might provide a clue.

Since the £1.30 was already missing at White City, how is what happened
afterwards going to provide any clue at all?

We need to start by looking at the OP's movements, especially bus
journeys, in the month after topping up at Heathrow, but before touching
in at White City.