MrMike, I agree with randyo that weight treadles have gone away since the late 60's. It is either a coil in the ground or optical these days.
By the way, the magnet seems to not work. I have tried several with poor results. It takes a certain amount of steel/iron to trigger a coil. Motorcycle and scoots lack the proper amount.
I, too, have carefully run redlights since 1960 that would not change. Tennesse now has a law that permits it. Ain't that nice! I have never heard of a cop anywhere that ticketed a bike for running a light that went through two cycles ignoring the rider.