1. a. Notwithstanding any law, rule or regulation to the contrary, a law enforcement officer or agency shall not use photo radar to enforce the provisions of chapter 4 of Title 39 of the Revised Statutes.
b. As used in this act, "photo radar" means a device used primarily for highway speed limit enforcement substantially consisting of a radar unit linked to a camera, which automatically produces a photograph of a vehicle traveling at a speed in excess of the legal limit.