Bahn German trains

Price:	2nd class: maximum of 142 euros (single rail journey within Germany). 1st class: maximum of 237 euros (single rail journey within Germany)
Booking period:	until further notice.
Travel period:
Pre-sales deadline:	From 91 days until shortly before departure
Period of validity single journey:	Up to 100 km: 1 day More than 100 km: 2 days Tickets for international journeys are valid for a maximum of 15 days
Period of validity between outward and return journey (journey of up to 100 km):	Outward journey: valid on the stated day of the outward journey. Return journey: valid on the stated day of the return journey
Period of validity between outward and return journey (journey with more than 100 km):	Outward journey: valid on the 1st stated date and the following day of the outward journey. Return journey: valid on two consecutive days within one month. The first date of validity has to be fixed at the moment of purchase or by a ticket inspector on board of the train.
Products:	Intercity-Express (ICE), Intercity-Express Sprinter (ICE Sprinter), Intercity (IC), Eurocity (EC), Interregio-Express (IRE), Regional-Express (RE), Regionalbahn (RB), S-Bahn. City Night Line may be used with a supplement only (in combination with a reservation).
Specific trains:	No
Ticket:	Applies for a single journey. Outward and return journey can be booked in one session.
Detour:	Possible if the point of departure and the destination station do not change. The difference between the flexible fare (if so with BahnCard...

See also:

Source: www.bahn.com

The Nuremberg S-Bahn (German: S-Bahn Nürnberg) is an S-Bahn network covering the region of Nuremberg, Fürth and Erlangen which was founded in 1987 and is now integrated in the Transport Association Region Nuremberg (Verkehrsverbund Großraum Nürnberg). The full...
Normalspur is the german word for Standard Gauge, on wich most german trains run, such as the National Train, urban light rail and metro-systems and most tramways.
Meterspur is the german word for metre gauge.Some tramways and historic trains run on it...
Poppenbüttel (German pronunciation: [ˈpɔpɛnbytɛl]) railway station is on the Alster Valley line and is serviced by the rapid transit trains of the Hamburg S-Bahn.
It is a terminus for the city trains of the line S1 and the temporary line S11, located in the quarter...