Privileged transit traffic

[citation needed] The corresponding line of communication (usually a railway) is called the (privileged) traffic corridor and a train used in this kind of transit is called a corridor train (German: Korridorzug, Italian: Treno-corridoio).

The reason for such arrangements is usually border changes or border creation which cut through an existing transport corridor.

In former Soviet Union, railways were built before the internal borders were made at present places, or not regarding them.

Trains might go a stretch into another country and back.

Some examples are: Air traffic has in general a number of privileged transit traffic rights, making it suitable to reach enclaves or isolated countries, and for longer-distance flights.