Instructions: Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Input: I'm really lost trying to understand the tariff for Nuremberg (Nurnberg) public transport. This is the most complicated thing I've ever met. 10 tariff zones and a dozen of ticket zone variants...

Let's say I'd buy a periodical (weekly for example) ticket for Tariff A (zones 100 and 200, Nurnberg, Furth and Stein). What ticket do I need if on single day I'd like to travel to, let's say, Erlangen (zone 400, zone 300 is crossed).

If I'm going to stay there the whole day and use multiple buses etc., do I need to buy daily ticket for 4 zones, or can I buy some kind of supplemental ticket for zones 300 and 400 (because I already have the ticket for zones 100 and 200)?

Output:
What kind of ticket is required to travel to other zones having Nuremberg periodical ticket for tariff A?