Ironically, the right to privacy was questioned by Alito when he helped nullify Roe v Wade. It will be "interesting" to see what other things we consider private aren't private in the eyes of this court. And even more "interesting" to see the converse.

The core issue is those red light cameras create a persistent database of who is where, which is then sold at a marginal cost to whoever wants it to advertise to/manipulate/track a population. Adding cameras everywhere invites a dystopian nightmare vs better urban design and occasional traffic police would solve the same problem.