"Richard" wrote

But then the DLR isn't unmanned in the same way that Paris, Lille or
Nuremberg (for instance) trains are. There is a member of staff on
board, as the would be on the Piccadilly.

There was at least one recorded case of a DLR train carrying passengers
running without a member of staff on board. The PSA closed the rest of the
doors then turned the key to close the local door and stepped out on to the
platform. The door closed and the train set off. The PSA had to walk to the
next station at street level.

Peter