Скачать или смотреть What do these Numbers actually mean?

One hundred years ago was the modern number plan for German steam locomotives introduced, sorting them by "Baureihen" like 01, but also like 18.4-5 or 55.25-56,58. So, what do these numbers actually mean, and how are they chosen?

All models in this video were created and rendered by myself using Blender.

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Chapters:

00:00 Intro
00:18 Backstory
01:28 Tender Locomotives
05:21 Four Digits
07:39 Tank Locomotives
10:44 Outro

DB Class 10 (2007) by Henning Pietsch sourced from:
https://commons.wikimedia.org/wiki/Fi...

WP 60 001 ex LBE 1 (1936) by Werner Hubert sourced from:
https://commons.wikimedia.org/wiki/Fi...