Gary Filler with the National Motorist Association says it's pretty clear to him that red light cameras serve one purpose only.

"Statistics seem to back it up everywhere the cameras pop up, that it's revenue driven," he said.

So now the NMA wants more information about Orlando's red light cameras, including accident rates and the yellow light timing.

"A lot of cities have been caught shortening yellow light times below Federal minimums," Filler said. That helps increase tickets, leading to another issue: Does the city have a deal with their camera vendor to share ticket revenues?

"In a lot of instances, camera companies actually have a vested interest in how many citations are being issued. They may get so many dollars per citation, or a percentage of the fine - which seems a bit of a conflict of interest when they're setting the operating parameters for the cameras."

Filler says they'll make their findings public after they hear back from the city.