After coming out in favor of red light cameras a while ago, I ran across this article, which takes a much less sanguine view — though the issue is not the value of the technology itself, but on how it’s being badly implemented, jiggered, and misapplied by various municipalities.
Though the writer tends to load his language something awful, there’s some bone beneath the meatheadedness, and some questions are raised which should certainly come up during any local implementation of such cameras around you.