From what I can see of you radiation Tony, its that you either have the lights in the wrong order, or you have the intensity set too high. Seing how you have 12 lights on each half of the lightbar, it shouldnt bee too much of a problem to work out a way to make a pattern that looks really rotating.
You should also make the radiation bigger, so that they connect, without overlapping (my two middle blue ones overlap slightly atm, but im gonna fix that sooner or later). Also, when changing the radiation size, you want to keep your eyes on the map and not the light-editor window.
Another problem is that red radiations dont show up properly on untextured maps in the editor. So you probably wanna texture it. Do that by pressing F2, clicking floor, and load floor. Then choose any of the floors in the "Maps" folder I'd recommend the lamod6.eft. It looks kinda shitty without any work. But we're changing lightning patterns, not making maps

Anyway, just find a random piece of road and put the car there for a better overview of the radiations.
Making the radiation look a bit rotating takes a while, but just put the radiations up next to eachother, and try to figure out the best way to put them to make it look like the light are passing and not blinking randomly.