Ken Wheatley wrote:

I remember when many London buses had a ticket machine inside the
right-hand leaf of the entrance door, so those with the right money could
bypass the queue for the driver. The really slow ones were the worst at
having a go at 'queue jumpers".

It would to me make sense to have an Oyster pad there. Hamburg is slightly
similar - driver side leaf for paying cash, other side for getting past
while people pay cash (you don't have to show your ticket). It is
extremely efficient, and as London has disabled access at the rear door the
centre rail could be reinstated to help "marshall" it.

Neil
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Neil Williams in Milton Keynes, UK. Put first name before the at to reply.