Hey! Your train also goes loop! The visual is nice, and a nice music loop.
However, I feel there is not really any objective in the game, or any need to change the tracks in the junctions.
Ah, now I see what the idea might have been! It’s a pity that only the submission page image and its “subtitle” give it away. Many players will miss it. You can use the junctions to disconnect the railway cars from the train, and presumably, they can collect the resources individually.
In that case, I think it would be better if the resources are automatically generated at the stations at some rate, and the player would mainly concentrate on finding the optimal paths of the railway tracks. Currently, the score only shows who thought about installing an autoclicker. :D