In Tennessee if you get a “citation” issued by a computer linked to a camera, you can just ignore it because it is totally unenforceable.
“in Tennessee, standard traffic camera and red-light camera tickets are effectively non-enforceable. Under state law, these citations cannot be reported to your insurance provider, will not add points to your driver’s license, and cannot impact your credit score or prevent you from renewing your vehicle registration.”
But they are enforceable in a designated school zone.