[Yosemite]

I have great difficulty turning out of my street because the neighbor on the corner has intentionally planted a large tree on the corner "to force people to stop." Well, that tree blocks the sight line for the oncoming traffic and making that turn is now very difficult and dangerous. And, that is the ONLY way out of the neighborhood; I live on a cul-de-sac off of a dead end street. Is this an issue I can bring to the deed compliance people, as a landscaping violation, or do I seek help from the sheriff as a traffic problem? I know talking to the neighbor is the first line of defense, and I have tried that to no avail.