It is a parking lot that I'm creating for pak128, it is specific for single-way street, where cars can park at 45 degrees.
In this case I am having a problem, see:

In the first image, we see that the bus is above the parked cars, this okay!
In the second image, the bus continues over parked cars, which is wrong, because the parked cars is that it should be at the forefront for game viewing angle.