Do they always flash on the Mesa, AZ ones? I am most worried about these ones because the light turned yellow at an intersection, and I had two decisions a. Slam on the brakes really hard to stop, and risk the guy behind me rear ending me. b. Speed up before the yellow turns red. I chose option B, but I am not sure if the yellow was shortened, and could have been red, etc. There was no flash, but there was a camera at this intersection. If there was no flash, that means the camera didn't activate right? I really hope so, these red light cameras are theft especially because they shorten the yellow light!