Functioning LED Brake/Tail Light Bulbs For Vehicle?

Other Types of Lights LED Light Bulbs
1

Has anyone had any success in finding a well-designed 1157-style brake/tail light bulb for vehicles? A brake light bulb must be able to operate in a normal low/taillight mode and then brighten when the brakes are pressed. My hunting online shows that there are many 1157-style LED bulbs available, but reviews typically indicate that there is little to no brightness change when the brakes are pressed. This poses a SEVERE safety hazard, in that following drivers will not be able to see the change and prepare to slow. The only exception I have found to date is DX's sku.193381 which is stated to have a very pronounced difference between high and low:

http://dx.com/p/wl20130104266-1157-12w-550-650lm-635-700nm-4-cree-xp-e-red-car-brake-light-193381

...although at $15/each.

I am attempting to upgrade the (very cheap) factory lighting on my motor scooter in an attempt to increase visibility beyond reason. I have a friend who was nearly killed when he was rear-ended on his bike after the driver behind him failed to notice his brake lights and turn signal. I would like to avoid this scenario if possible. When I hit my brakes, I want drivers behind me to have no excuse...

I have replaced the turn signals and driving lights with LEDs easily, but the dual-brightness taillight bulbs are a bigger challenge. I can replace the lights with brighter incandescent bulbs but would like to go the LED route if there is an off-the-shelf solution available.

A second bit of reasoning here is that the electrical system on my bike is a bit weak, and every watt that is saved by using a more efficient lighting method is that much more available to keep the battery charged. Safety, however, is my primary concern.

2

Have you looked over at superbrightleds? It’s been a while since I looked there, so not sure if they have what you want.

For a street bike I’d suggest you add some lights at the rear under the same principle as the 3rd brake light on cars. Also, be aware that some systems can drive LEDs to be dimly on even when the vehicle and light circuit is off. My friends full-size Dodge PU does that with the interior and rear cab LEDs he put in.

3

You should look for motorcycle-specific conversion bulbs instead of automotive bulbs. For a car it's little more than an interesting novelty at this point, for bikes it's life-and-death stuff. The bike guys have had for quite a while now things like LED conversion brake light bulbs that do a strobe pattern, for instance.

4

LED bulbs are available in white, amber for indicator bulbs and red for tail and brake bulbs. Also LEDs run on a much lower wattage than a standard filament bulb.