How to change the bounding boxes?

There is a certain distance between two car when it stop, I think it may be a problem with the frame. I wonder how to change the frame of the component to solve this problem?

I think that the spacing of objects on motion paths is based on their bounding boxes, which makes it inaccurate on curved paths like that.

Even if you could change the bounding box to be smaller than the geometry, it would then cause issues elsewhere.

yes it is ,I don’t know how to change the bounding boxes suit for the geometry, Does it has any other idea or case to solve such conveyer problem?Or it need in physical features?