Why is Tailgator the best brake light you can buy:

We analyzed all regular tail lights and improved on best features:
Lumens (100 x 3 LEDs), battery life (1000ma battery), housing quality and more
Accelerometer more advanced than other brake lights use. More costly but we assumed safety is worth a bit more.
Spent 2 years testing and improving performance. Fewer false brake events
Result: brighter, more accurate performance as a brake light or even a tail light
The safety of yourself and your loved ones does not have a price tag

Best results on streets or roads in average to good condition, some natural rough spots
Many dirt trails or fire roads work well but not jumping boulders or roots
Stopping or moderate deceleration to significant decrease in speed is ideal
Descending rapidly on hills and braking for corners gets excellent results
The light is programmed to NOT light up at slow speeds; a 3 mph or so decrease in speed. You do not want lights going on constantly, only when needed.
Attach light to seat post. Not helmet or back pack. Constant body movement will cause light to be erratic and wear down battery.
Going uphill the light is erratic due to body motion. But, how often do you brake going uphill?

Battery life is based on braking every 90 seconds
Braking (300 lumens at once) causes most energy drain from battery
Heavy traffic or more frequent braking may lessen battery estimates. To resolve that, we use the largest battery in any light. There are no riding sacrifices using a brake light
This is not a tail light where lighting is constant and time can be more specific.
Three light modes use braking, two do not. The non-battery modes will last a very long time. Different flashing patterns produce different results – consult information book.
Accuracy is important thus no extravagant claims of 25-50 hours of battery life are made.

Why not just use hand signals to warn people behind me?

Most bike hand signals are not recognized today.
Let’s be safe and let technology help here.
Three LEDs flashing on at the same time is easily understood
Many people scratch their heads and say this is such a logical idea, why didn’t it come sooner? Resistance to change? No available solution that actually worked well? Why did it take so long to discover the wheel? A bike helmet? Seat belts? It takes time and innovation.