-- ! colspan="4" style="color:yellow; background:#0B4559" | Table of locomotive types | -- | Letters | Locomotive type (German) | Locomotive type (English) | Classes | -- | S | Schnellzuglokomotive | Express train locomotive | 01 to 19 | - | P | Personenzuglokomotive | Passenger train locomotive | 20 to 39 | - | G | Güterzuglokomotive | Goods train locomotive | 40 to 59 | - | St | Schnellzugtenderlok | Fast train tank locomotive | 60 to 79 | - | Pt | Personenzugtenderlok | Passenger train tank locomotive | - | Gt | Güterzugtenderlok | Goods train tank locomotive | 80 to 96 | - | Z | Zahnradlokomotive | Cog locomotive | 97 | - | L | Lokalbahnlokomotive | Branch line locomotive | 98 | - | K | Schmalspurlokomotiven | Narrow gauge locomotive | 99 |
Example: A DRG Class 01 express train locomotive had the following type classification: S36.20.That meant: Express train locomotive (Schnellzuglokomotive) with 3 coupled axles, a total of 6 axles and an axle load of 20 tonnes
It was intended to use this type classification system for electric locomotives as well. But because electric locomotives could be used for any duty, this plan was given up.
The primary classification system was based on class numbers which, in the case of steam locomotives ran from 01-99 (see table, right hand column).