This Game creates very big saves / atosaves, and the location is the steam folder in your windows / program files folder. Also when installed on your second HDD in your steam games-folder, the savegames will be stored on your SSD. After 5h playing this game, my 128 GB SSD has been wasted with up to 1 GB Train Fever Savegames.
Developers, please fix this. Many Player will not recognize this, and wonder how there SSD-space is gone.