Angustruck Glad, that you already enjoy the game. Feel free to use the in-game feedback tool to report any bugs you encounter. The more tickets we get for the same issue the more likely it will be that we fix it (sooner).
Regarding passenger embarkation and disembarkation frequency: Yes, it is adjustable in the UE4 Game Editor how many people are waiting at a particular bus stop. We will also add more parameters to the bus stops. At the moment too many passengers exit the vehicle at bus stops where they usually wouldn't disembark én mass in real life and at others where they should they don't.
There will also be sliders for overall passengers and ticket sales but at a later phase of the Early Access.
TurryBoeing the Lighting will probably be adjusted along with the Early Access as a lot of people are complaining about it being too bright at the moment.