Most of DTM's efforts of late are 1st generation streamlined carbody Diesels, or early 2nd generation hood units, and they come with caboose fitting for the era of 1960's-70's
The purpose of a caboose is to provide a working platform for the conductor and rear brakeman, and ...
to carry the compulsory markers to mark the end of the train as required by the rules.
Now, do DTM's caboose have these markers?
I couldn't make them out in the Steam screenshots.