On Aug 23, 12:12*am, Clive Page wrote:

I wondered about that myself. *The standard way of using Oyster on a
London bus is just to touch in, but outside London most bus fares depend
on the distance. *At present you have to tell the driver your
destination, and he gives you a ticket for a given fare. *If you have a
bus pass, the ticket is priced at zero to you, but the system knows how
much to charge the local Council. * But if you just touch in at the
start of the journey, the system has no knowledge of how far you are
going. * So how does this work in other places: do you have to touch in
AND touch out?

Lots of different ways.

Holland and Singapo On touching in you are charged maximum fare to
your card. You touch out on exit (by the middle doors) and this
refunds back to where you actually got off.

Vevey, Switzerland: There is a mini "ticket vending machine" by the
driver and at other doors (entry is by all doors with a Penalty Fares
system in operation instead of drivers checking), and you select on
that using a touchscreen your destination zone before touching your
card.

Milton Keynes old contact-based system (passes only, but it did have
an unused stored-value feature which had it been used would have
worked the same way): insert card, state destination, ticket is issued
in the same way as a cash ticket by driver but debiting card, card
returned.

Neil