I am not sure I'm sorry
Does it say anywhere on the ticket?
Travel with that pass is limited to 4 one way trips per route, so if you want round trips, you may be able to do only 2 for a particular segment. Once finished, you could do also round trips but on diferent route. You can travel 7 days within a 21 day period.
Their good for 2 way trips! Not sure how many trips!
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