I would like to invite your attention to my post #96416, reproduced below:
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The British rail has a citizen's charter which goes something like this:-
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"For any reason, what so...
more... ever, if the train reaches your destination late by more than 20 minutes, you can take back your fare across the counter, with no questions asked"
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I have seen this when I visited UK during 1992. They were striving to get the limit to 10 minutes, but I learn that they are yet to achieve this till date.
bit.ly/arjJ5e