https://groups.google.com/group/uk.t...d646b6aa?hl=en

"First of all I should point out to you that you cannot be charged
with
fare evasion if you have a valid ticket.
If you go to this page - a current page -
http://getoutmore.dlr.co.uk/carriage/index.asp
you can get the .pdf of the DLR's Cs of C; which reads exactly as it
did two years ago:

""6.6.1. When you use Docklands Light Railway, London Underground and
National Rail services, you must touch your Oyster card on the card
reader at both
the start and the end of your journey. If the ticket gates at stations
are open you must
still touch your Oyster card on the card reader."""