The other week I was behind a fire truck which had LED tail lights... when the brakes were applied the brake lights strobed quickly and went steady, really draws your attention!
Now, I wanted the same thing for my third brake light because I already have an LED cluster mounted in there. It would also work great with a spoiler LED brake light.

I found this and decided to give it a try.

Its a cool little unit (which is the size of a honda keyless remote), which closely replicates what I saw on the truck. When the power is applied it makes the light strobe quickly in 3 sets of 3 quick flashes and then goes steady. I tried to make a small video of it, but it flashes so fast its hard to tell what its really doing in the video. Plus I dont know where to host a video.

Thought I'd share this with everyone, especially for people that have been rear-ended!