Ok. Are you sure the cars shadow isn't casting anything in Zone A when it drives by? Or when it drives by does it cause leaves to start blowing or something? If you don't have a zone on the street, then it won't be included in the motion rules.
One other thing, I don't have much luck with Cancel Shadows. I find that sometimes when someone walks into the frame, it thinks it may be a shadow and doesn't alert me. I would suggest turning off that feature.
Also, you have Object Travels (pixels) to 400 in some cases. This means that the object has to travel 400 pixels before generating motion. That might be too much for your front yard. I see sometimes you have 100, and 400 on others. I'm not sure what camera is what since. Just note this setting.
The make time means there needs to be 1 second of constant movement for it to alert you. Which is why it was suggested to turn it down from 5 seconds to 1.
Why do you have Alt/timelapse Framerate checked on the Record screen? It seems that shouldn't be checked.
I would also untick Black and White.
One other thing I suggest. In order to see exactly where the motion occurs, while watching the video clip, Turn on "Test run video through motion detector". This will run the recorded clip through the motion detector, and it will highlight where it's sensing the motion. You can use this to test any setting changes to see if it still trips the motion detector.
Gotta run. Hope that was some help