Definitely put cameras in the bus lane and fine all the cars who are driving in it then.

There are solid black lines in the bottom diagram instead of dashed in the top two, this suggests something more than a lane line, it might be representing a kerb or could easily be a more physical barrier. but as far as a simplified diagram goes that looks pretty clearly separated as can be depicted in plan view.

I assume this is not the detailed plans. If it is those buildings are way too small for all of these people to fit inside.