I don't need to. I helped extricate bodies from crashed cars for 16 years, and I'm completely in favor of vigorous enforcement of red light and stop sign violations. I just don't like mechanical devices that snap away indiscriminately at those who weren't aware that the yellow lights are now a half-second instead of two seconds.
Incidentally, the very worst accidents I've responded to were drunks going the wrong way on freeways. Don't know what mechanical devices will stop that except maybe wrong-way spikes on freeway ramps.