What's the purpose of Oyster?
On 15 Feb, 13:13, Offramp wrote:
A dumbbell on London Underground works in two ways.
With Oyster: the travelcard loaded on the card is for zones 2 & 3 (it
could be a weekly, a monthly or more). The customer does not touch in
at the station of ingress (eg Finsbury Park), travels through zone 1
and touches out at eg Stockwell. No fare is charged for zone 1....
I should have added, "...although the customer is liable to pay one."
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