AHHHH.... I see what you're saying... and yes... totally agree... both colors need to illuminate separately (and synnchronized) to achieve what I'm talking about. Not "randomly".... I mean a "one off, one on" pattern, truly alternating. When the colors contrast and are easily discernable without "blending", that pattern is far more effective than an "on off" or "variable" flash with one single color. Even if they are "right there together", when they flash two distinctly different colors *alternatively*, it's very effective.
This came from the very first time I saw "intersection LED's" on a pursuit vehicle.... I saw the light flashing on the push bumper and thought, "With new LED tech, why not have one alternating red/blue on each side coming from the same light source instead of just one color going on/off on each side? As bright as they are and as different as the colors are, why not take advantage of every edge you can get?"
With as "Used to the norm" as human eyes have become, why not confuse them to gain attention? We are so used to seeing flashing "solid" colors, why not bring something new into the game by two different colors coming from the same location at almost the same time?
Getting on my soapbox here..... That's why I am a huge fan of a good rotating light bar with fast rotators. I see people move faster and earlier for those than any of the new LED bars. It's almost like "It's something new that they're not familiar with". I think we (people in general) try way too hard to come up with "brighter and more blinding" when what we need is someting "more awe inspiring that works in all weather", which anyone who's ever been in fog/snow knows is a good rotator bar. That's why I REALLY hope FS comes up with a good viable bar (i.e. the Navigator in patrol length/config) with the new Vison tech other than the "V" shaped bar, that bar is just horrendously and unnecessarily huge. I firmly bleieve we are at a point now where we can almost go back to 80's and 90's technology and achieve better results than what we are seeing with the $5-10,000 set ups we are currently seeing in patrol vehicles. Texas DPS now burns all 4 takedowns (flashing) and headlight wig/wag when they run hot because white light can bee seen 5 times sooner than any other; it's not until that balck and white comes within 100 yards of you that you can see any red or blue. The only down side is the additional electrical load we are now seeing with patrol equipment.... and I hate on-board computers.... I prefer good dispatchers. But before I slip off my current soap box and fall onto another, I'll stop. HA!!!