Schwarzfahren und falsche daten angegeben schlimm?

Since this is usually not possible,

because one has to present the Perso, the question is unnecessary. If you don’t have a Perso, the police are usually called in, and this has means and ways to establish the identity. This is then usually also the point of crunch, where a civil law issue, namely the payment of an increased transport fee (usually 60 euros), becomes a criminal offence. You then have the choice, either you identify yourself, or the police do this and will then have to determine automatically for the purpose of accelerating services, § 265 StGB, as this is an official offence.

This, if there should be a division of the profession, may have an impact on the choice of profession, which only respect the very few young rebels.