Well I know 1 thing is for sure... When I installed the third brake light flasher unit And set the unit to flash a fast frequency for a longer than normal period, people stayed further away from the rear of the VX. It is a huge noticeable difference. Its almost as if the light pattern is not only completely unique to the surrounding environment but is "screaming" at the person behind me. I have tested this over and over while driving at a fast speed, I would tap the brakes for a few seconds to activate the third brake light and most of the time the drivers behind me will keep their current speed but switch lanes to get away from being behind me OR They will go around me. When I don't do this then I have traffic behind me like I would normally expect. I am now in the habit of when I see possible danger coming or vehicle slowing too fast, I will tap the brakes just enough to activate the lights and hold that for a couple of seconds to grab everyone's attention behind me and it works everytime.