I really love the mini metro/motorways vibe you have going on but I am a bit confused.
You're not really transporting people from one point to another, you just make lines that make money and have to hit x amount passed through a point to unlock new areas which results in the gameplay being squeeze as may bike lanes into the area as possible and spam intersections to increase revenue. (As opposed to optimizing traffic flow.) I'm not sure if I'm explaining this correctly. Is this the intended gameplay?
Bugs:
The area unlock below the starting area is broken and doesn't count bikes at all
The cash indicator moves out of the box in dark mode.
Suggestion:
Zoom function for upgrade tree