Is it a tram or train? Does it have a low floor?

Это междугородный трамвай.

In fact this is a tram. In the town centres of Karlsruhe, Pforzheim, Bad Wildbad and Worth these cars runs through the streets on tramway lines. At these sections the 750 V DC currency is used. But they are designed to run on DB-lines with 15 kV AC currency. These cars have replaced many regional train services in the Karlsruhe area, and the longest lines have a terminus 100 km away from Karlsruhe. Some of these trams run for special occasions into Austria and Switzerland.