Yes, probably TGM1. Animating rods is not a big deal. Will be nice to have something new . Thank you for answers.

TGM2 is an experimental locomotive. It was not widely used. You meant TGM1, didn't you? I have a model TGM1, but the game does not allow animating the coupling rods.
The modification changes the sounds of all default trains to real ones. The sounds of trams remained unchanged. In the future, I plan to replace the aircraft sounds.

Another question . So if I use your sound mod will it affect only your mod or it will change all trains sound ?

Can you make some early years motor rail cars , like drezina? We are really need some USSR early trains stock for this game. And some smaller locomotives, like TGM-2. But thank you for doing mods for us. We are really appreciate your guys work.

Without the sound MOD, the locomotive will be without engiine sound, The MOD was created to increase the realism and more immersion in the gameplay. Unfortunately, vanilla SFX are very poor and have nothing to do with reality.
As for 1930-1950, in those years, steam locomotives were actively used in the socialist republics. There were very few diesel locomotives. Those diesel locomotives that were available were mainly bought in the USA. Then replicas of American locomotives were built in the republics. Only at the end of the 50s began the gradual replacement of steam locomotives with electric and diesel locomotives.

Thank you for your answer. Do we really need to download sound file and mess with it? Can we just use vanilla sound file?
Also, if I may suggest, we need more early years locomotives.1930-1950.

Firstly, it is a completely different, better quality model. Secondly, on this model I trained to work with a Steam Workshop.

Already was in workshop? How is this one different from another one from Frantic Monkey?