InterRegio

The InterRegio is a train service seen in some European countries. Mostly they are trains that run "from region to region", as best described by Swiss Federal Railways.

Switzerland

The InterRegio in Switzerland was first introduced in 1997. They replaced some of the former fast trains with their own identity (InterRegio).

InterRegio trains are now very commonplace in Switzerland. The abbreviation is IR in a 45°-edgy font, white letters on red.

The ICN runs as an InterCity train but with halt frequencies in the same manner as an IR. When ICN services first began on May 28, 2000, the ICN was placed as an InterRegio train.

Germany

InterRegio trains were also commonplace. They liaised mainly between regions in Germany. Today, it's mostly known as "InterRegioExpress".