"D DB 90001" wrote:
Southern seem to be gaining oyster readers at many of the
stations I have visited recently, so they are going to be
accepting oyster PAYG soon presumably, the main barrier
to implementation being revenue allocation, and not lack of
Oyster readers.


Revenue allocation is not the issue now - the agreements have been made
operator by operator, not line by line; so Southerns deal was made before
they started installing readers on non-shared stations.

Much more likely that installation is being phased to spread the financial
pain, and where possible to tie in with other work. It's not the readers
that are expensive, but installing them and making them part of the system.
There's even planning issues; though they may appear random, someone has
decided where they should go. The apparent randomness may indicate shortcuts
to share cable runs with other items, etc., etc.
--

Andrew