OK - permission, then. I have to obtain the railway’s permission to travel on one of their trains. 99% of the time this is done by purchasing a ticket (which is proof that I have obtained permission). There are times / places / circumstances where “the railway” has decided that I can obtain this permission retrospectively (ie after having boarded a train or even having arrived at my destination). In those cases the railway - or an official of the railway has retrospectively granted me permission to travel - including for that part of the journey for which, at the time of travel, I did not hold a valid ticket.That is not what "authority to travel" means. It has a specific meaning - you have either a valid ticket or authority to travel, not both. That is why having authority to travel from an authorised person is a defence to not having a valid ticket. They are separate things. You don't have both at the same time.
From NRCoT:
And Bylaw 18 defence:
"Authority to travel" is not just a piece of paper, although this is the easiest and most secure way of proving a passenger has it.
A guard who allows a passenger to board a train and travel to their destination without a ticket, as it was lost, has given authority to travel. A booking clerk who says a passenger can board a train at a station because his card machine is slow has given authority to travel. Most authorities to travel are verbal, in practice.
Authority to travel cannot be given retrospectively. This is a piece of mental gymnastics never before seen on the forum, concocted to avoid the quite simple fact that the passenger purchased and presented a valid ticket for their journey. It's still a Bylaw 18 offence; the train company could still have used that, but they didn't.
Bylaw 18 offences are complete the moment they happen. The defence cannot be applied retrospectively.
As an afterthought, would the wording “This ticket is invalid if any part of the journey commenced before the time of issue” clearly stated on all e-tickets etc. bexsufficient to plug the loophole? ( I appreciate there are people who think the loophole should be widened, not plugged…)
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