Led headlight bulbs

[Connor]

You realise CREE is just a manufacturer of SMD LEDs right? Not a type of bulb...

One way of making LEDs brighter is to give them a ballast, similar to that of HIDs. They 'pulse' the light at a high frequency (it just looks constant to us) and it gives a greater light output. When captured on camera they can look as though they are flashing or not on at all (watch some ALMS /Sportscar races and you'll notice) this is because the camera is picking up more frames than we can see with the naked eye and capturing the bulbs between pulses...

You can also notice it on topgear lol