The blue carriages are passenger cars built between 1961 and 1987 used by VR for long-distance passenger travel in Finland.
The first 15 units were built in Germany by Maschinenfabrik Esslingen in 1961.
Most are capable of speeds up to 140 to 160 kilometers of hour.
They are slowly being phased out in favour of the more modern InterCity-coaches.
[1] Some are still used in night trains from Helsinki to Kolari and Rovaniemi and in commuter trains from Helsinki to Kouvola.