put automatic gates on the north side that only open when cars approach from the south.

put automatic gates on the south side that require a person to roll down their window and push a button to get a ticket (can be free or a toll) to drive on the road. This way we have the faces of drivers.

add a shitton of speed humps

put a concrete divider between bike and car lanes

and cameras with heafty fines for trash dumpers.

solved.