Note that the term train station is American English. In British English the term railway station is usually used instead.
A terminus is a station at the end of a railway. Platforms can be reached without crossing tracks.
Often a terminus is the final destination of a train, but not necessarily. If not, the driver walks to the other side. For such a train service preferably a train is used that does not require connecting a locomotive on one side and disconnecting the other one. A multiple unit can be used, or in the case of a long train, one with both a pushing and a pulling locomotive. A train may also have a locomotive on one side and a passenger car with driver's cabin on the other side.
The same applies if the station is not a terminus, but the train service involves reversing direction anyway.
The first applies at:
The second applies at:
Reversing direction often causes some worry to travellers who are inexperienced and have no detailed geographic knowledge of the railway lines: they think they will be going back all the way, but instead, there is of course a junction soon, where the train takes another branch than where it came from. Some travellers prefer facing forward; if possible they change place when there is a reversal of direction.
At train stations the railway is often at ground level or elevated. However, some train stations of regular railways are in a tunnel, like the stations of underground systems. These include:
Some train stations are at a non-level crossing of regular railway lines, providing stops on both lines. These include:
Convenience stores at train stations