Here you will find videos of diesel locomotives that don’t quite fit into the sub-categories that we have.
For example, they might be mainline diesel locos but they’re not actually going anywhere in the video. So, checkout the videos of diesel locomotives that we have here because they will be worth seeing.
In in-depth look at a Union Pacific DDA40X
Diesels don’t come much bigger than this and it’s interesting that neither it, nor anything like it, are still in use today
It seems that we seem to have reached a point where anything over 4500hp is just too big to be economical or reliable.