8 days at least! Its fun little game, like a more chaotic Mini Metro :D I think it would be amazing if you could see the positions of the trains of all other lines while you are drawing a new loop at the time when the train of the drawn loop is at your mouse position.
Viewing post in The Chief of Glorious Transport jam comments
So image the situation where you are drawing a new loop while there are already 2 other loops present. When drawing the current loop, you might need to intersect one of the existing ones, but you want to intersect it in a way that the trains on each loop aren't on the intersection at the same time. Right now, you just need to guesstimate at which position a train of an existing loop will be at a given time. But since time is directly linked to the current length of the currently drawn loop, you could show some kind of preview or ghost of the trains of existing loops at the positions where they will be when the train of the currently drawn loop is at the point you are currently drawing.
I'm pretty sure what I'm thinking makes perfect sense, but I'm not sure if I'm explaining it in a way that is understandable :D